// SPDX-License-Identifier: MIT

pragma solidity >=0.6.2 <0.8.0;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly { size := extcodesize(account) }
        return size > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: value }(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
        require(isContract(target), "Address: static call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.staticcall(data);
        return _verifyCallResult(success, returndata, errorMessage);
    }

    function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/*
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with GSN meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

import "./IERC20.sol";
import "./SafeMath.sol";
import "./Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

//IUniswapV2Pair
pragma solidity >=0.6.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//this is the uniswap interface

pragma solidity ^0.6.6;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}




pragma solidity ^0.6.0;

abstract contract ERC20WithoutTotalSupply is IERC20 {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    function balanceOf(address account) public view override returns (uint256) {
        return _balances[account];
    }

    function allowance(address owner, address spender) public view override returns (uint256) {
        return _allowances[owner][spender];
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(msg.sender, recipient, amount);
        return true;
    }

    function approve(address spender, uint256 amount) public override returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
        return true;
    }

    function _transfer(address sender, address recipient, uint256 amount) internal {
        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    function _approve(address owner, address spender, uint256 amount) internal {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function _mint(address account, uint256 amount) internal {
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal {
        _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
        emit Transfer(account, address(0), amount);
    }

    function _burnFrom(address account, uint256 amount) internal {
        _burn(account, amount);
        _approve(account, msg.sender, _allowances[account][msg.sender].sub(amount, "ERC20: burn amount exceeds allowance"));
    }
}


///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//this is the ChiToken interface
interface IFreeFromUpTo {
    function freeFromUpTo(address from, uint256 value) external returns (uint256 freed);
}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//this is the balancer interface
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;
interface PoolInterface {
    function swapExactAmountIn(address, uint, address, uint, uint) external returns (uint, uint);
    function swapExactAmountOut(address, uint, address, uint, uint) external returns (uint, uint);
    function calcInGivenOut(uint, uint, uint, uint, uint, uint) external pure returns (uint);
    function calcOutGivenIn(uint, uint, uint, uint, uint, uint) external pure returns (uint);
    function getDenormalizedWeight(address) external view returns (uint);
    function getBalance(address) external view returns (uint);
    function getSwapFee() external view returns (uint);
}

interface TokenInterface {
    function balanceOf(address) external view returns (uint);
    function allowance(address, address) external view returns (uint);
    function approve(address, uint) external returns (bool);
    function transfer(address, uint) external returns (bool);
    function transferFrom(address, address, uint) external returns (bool);
    function deposit() external payable;
    function withdraw(uint) external;
}

interface RegistryInterface {
    function getBestPoolsWithLimit(address, address, uint) external view returns (address[] memory);
}

contract ExchangeProxy is Ownable {

    using SafeMath for uint256;

    struct Pool {
        address pool;
        uint    tokenBalanceIn;
        uint    tokenWeightIn;
        uint    tokenBalanceOut;
        uint    tokenWeightOut;
        uint    swapFee;
        uint    effectiveLiquidity;
    }

    struct Swap {
        address pool;
        address tokenIn;
        address tokenOut;
        uint    swapAmount; // tokenInAmount / tokenOutAmount
        uint    limitReturnAmount; // minAmountOut / maxAmountIn
        uint    maxPrice;
    }

    TokenInterface weth;
    RegistryInterface registry;
    address private constant ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
    uint private constant BONE = 10**18;

    constructor(address _weth) public {
        weth = TokenInterface(_weth);
    }

    function setRegistry(address _registry) external onlyOwner {
        registry = RegistryInterface(_registry);
    }

    function batchSwapExactIn(
        Swap[] memory swaps,
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint totalAmountIn,
        uint minTotalAmountOut
    )
        public payable
        returns (uint totalAmountOut)
    {
        transferFromAll(tokenIn, totalAmountIn);

        for (uint i = 0; i < swaps.length; i++) {
            Swap memory swap = swaps[i];
            TokenInterface SwapTokenIn = TokenInterface(swap.tokenIn);
            PoolInterface pool = PoolInterface(swap.pool);

            if (SwapTokenIn.allowance(address(this), swap.pool) > 0) {
                SwapTokenIn.approve(swap.pool, 0);
            }
            SwapTokenIn.approve(swap.pool, swap.swapAmount);

            (uint tokenAmountOut,) = pool.swapExactAmountIn(
                                        swap.tokenIn,
                                        swap.swapAmount,
                                        swap.tokenOut,
                                        swap.limitReturnAmount,
                                        swap.maxPrice
                                    );
            totalAmountOut = tokenAmountOut.add(totalAmountOut);
        }

        require(totalAmountOut >= minTotalAmountOut, "ERR_LIMIT_OUT");

        transferAll(tokenOut, totalAmountOut);
        transferAll(tokenIn, getBalance(tokenIn));
    }

    function batchSwapExactOut(
        Swap[] memory swaps,
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint maxTotalAmountIn
    )
        public payable
        returns (uint totalAmountIn)
    {
        transferFromAll(tokenIn, maxTotalAmountIn);

        for (uint i = 0; i < swaps.length; i++) {
            Swap memory swap = swaps[i];
            TokenInterface SwapTokenIn = TokenInterface(swap.tokenIn);
            PoolInterface pool = PoolInterface(swap.pool);

            if (SwapTokenIn.allowance(address(this), swap.pool) > 0) {
                SwapTokenIn.approve(swap.pool, 0);
            }
            SwapTokenIn.approve(swap.pool, swap.limitReturnAmount);

            (uint tokenAmountIn,) = pool.swapExactAmountOut(
                                        swap.tokenIn,
                                        swap.limitReturnAmount,
                                        swap.tokenOut,
                                        swap.swapAmount,
                                        swap.maxPrice
                                    );
            totalAmountIn = tokenAmountIn.add(totalAmountIn);
        }
        require(totalAmountIn <= maxTotalAmountIn, "ERR_LIMIT_IN");

        transferAll(tokenOut, getBalance(tokenOut));
        transferAll(tokenIn, getBalance(tokenIn));

    }

    function multihopBatchSwapExactIn(
        Swap[][] memory swapSequences,
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint totalAmountIn,
        uint minTotalAmountOut
    )
        public payable
        returns (uint totalAmountOut)
    {

        transferFromAll(tokenIn, totalAmountIn);

        for (uint i = 0; i < swapSequences.length; i++) {
            uint tokenAmountOut;
            for (uint k = 0; k < swapSequences[i].length; k++) {
                Swap memory swap = swapSequences[i][k];
                TokenInterface SwapTokenIn = TokenInterface(swap.tokenIn);
                if (k == 1) {
                    // Makes sure that on the second swap the output of the first was used
                    // so there is not intermediate token leftover
                    swap.swapAmount = tokenAmountOut;
                }

                PoolInterface pool = PoolInterface(swap.pool);
                if (SwapTokenIn.allowance(address(this), swap.pool) > 0) {
                    SwapTokenIn.approve(swap.pool, 0);
                }
                SwapTokenIn.approve(swap.pool, swap.swapAmount);
                (tokenAmountOut,) = pool.swapExactAmountIn(
                                            swap.tokenIn,
                                            swap.swapAmount,
                                            swap.tokenOut,
                                            swap.limitReturnAmount,
                                            swap.maxPrice
                                        );
            }
            // This takes the amountOut of the last swap
            totalAmountOut = tokenAmountOut.add(totalAmountOut);
        }

        require(totalAmountOut >= minTotalAmountOut, "ERR_LIMIT_OUT");

        transferAll(tokenOut, totalAmountOut);
        transferAll(tokenIn, getBalance(tokenIn));

    }

    function multihopBatchSwapExactOut(
        Swap[][] memory swapSequences,
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint maxTotalAmountIn
    )
        public payable
        returns (uint totalAmountIn)
    {

        transferFromAll(tokenIn, maxTotalAmountIn);

        for (uint i = 0; i < swapSequences.length; i++) {
            uint tokenAmountInFirstSwap;
            // Specific code for a simple swap and a multihop (2 swaps in sequence)
            if (swapSequences[i].length == 1) {
                Swap memory swap = swapSequences[i][0];
                TokenInterface SwapTokenIn = TokenInterface(swap.tokenIn);

                PoolInterface pool = PoolInterface(swap.pool);
                if (SwapTokenIn.allowance(address(this), swap.pool) > 0) {
                    SwapTokenIn.approve(swap.pool, 0);
                }
                SwapTokenIn.approve(swap.pool, swap.limitReturnAmount);

                (tokenAmountInFirstSwap,) = pool.swapExactAmountOut(
                                        swap.tokenIn,
                                        swap.limitReturnAmount,
                                        swap.tokenOut,
                                        swap.swapAmount,
                                        swap.maxPrice
                                    );
            } else {
                // Consider we are swapping A -> B and B -> C. The goal is to buy a given amount
                // of token C. But first we need to buy B with A so we can then buy C with B
                // To get the exact amount of C we then first need to calculate how much B we'll need:
                uint intermediateTokenAmount; // This would be token B as described above
                Swap memory secondSwap = swapSequences[i][1];
                PoolInterface poolSecondSwap = PoolInterface(secondSwap.pool);
                intermediateTokenAmount = poolSecondSwap.calcInGivenOut(
                                        poolSecondSwap.getBalance(secondSwap.tokenIn),
                                        poolSecondSwap.getDenormalizedWeight(secondSwap.tokenIn),
                                        poolSecondSwap.getBalance(secondSwap.tokenOut),
                                        poolSecondSwap.getDenormalizedWeight(secondSwap.tokenOut),
                                        secondSwap.swapAmount,
                                        poolSecondSwap.getSwapFee()
                                    );

                //// Buy intermediateTokenAmount of token B with A in the first pool
                Swap memory firstSwap = swapSequences[i][0];
                TokenInterface FirstSwapTokenIn = TokenInterface(firstSwap.tokenIn);
                PoolInterface poolFirstSwap = PoolInterface(firstSwap.pool);
                if (FirstSwapTokenIn.allowance(address(this), firstSwap.pool) < uint(-1)) {
                    FirstSwapTokenIn.approve(firstSwap.pool, uint(-1));
                }

                (tokenAmountInFirstSwap,) = poolFirstSwap.swapExactAmountOut(
                                        firstSwap.tokenIn,
                                        firstSwap.limitReturnAmount,
                                        firstSwap.tokenOut,
                                        intermediateTokenAmount, // This is the amount of token B we need
                                        firstSwap.maxPrice
                                    );

                //// Buy the final amount of token C desired
                TokenInterface SecondSwapTokenIn = TokenInterface(secondSwap.tokenIn);
                if (SecondSwapTokenIn.allowance(address(this), secondSwap.pool) < uint(-1)) {
                    SecondSwapTokenIn.approve(secondSwap.pool, uint(-1));
                }

                poolSecondSwap.swapExactAmountOut(
                                        secondSwap.tokenIn,
                                        secondSwap.limitReturnAmount,
                                        secondSwap.tokenOut,
                                        secondSwap.swapAmount,
                                        secondSwap.maxPrice
                                    );
            }
            totalAmountIn = tokenAmountInFirstSwap.add(totalAmountIn);
        }

        require(totalAmountIn <= maxTotalAmountIn, "ERR_LIMIT_IN");

        transferAll(tokenOut, getBalance(tokenOut));
        transferAll(tokenIn, getBalance(tokenIn));

    }

    function smartSwapExactIn(
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint totalAmountIn,
        uint minTotalAmountOut,
        uint nPools
    )
        public payable
        returns (uint totalAmountOut)
    {
        Swap[] memory swaps;
        if (isETH(tokenIn)) {
          (swaps,) = viewSplitExactIn(address(weth), address(tokenOut), totalAmountIn, nPools);
        } else if (isETH(tokenOut)){
          (swaps,) = viewSplitExactIn(address(tokenIn), address(weth), totalAmountIn, nPools);
        } else {
          (swaps,) = viewSplitExactIn(address(tokenIn), address(tokenOut), totalAmountIn, nPools);
        }

        totalAmountOut = batchSwapExactIn(swaps, tokenIn, tokenOut, totalAmountIn, minTotalAmountOut);
    }

    function smartSwapExactOut(
        TokenInterface tokenIn,
        TokenInterface tokenOut,
        uint totalAmountOut,
        uint maxTotalAmountIn,
        uint nPools
    )
        public payable
        returns (uint totalAmountIn)
    {
        Swap[] memory swaps;
        if (isETH(tokenIn)) {
          (swaps,) = viewSplitExactOut(address(weth), address(tokenOut), totalAmountOut, nPools);
        } else if (isETH(tokenOut)){
          (swaps,) = viewSplitExactOut(address(tokenIn), address(weth), totalAmountOut, nPools);
        } else {
          (swaps,) = viewSplitExactOut(address(tokenIn), address(tokenOut), totalAmountOut, nPools);
        }

        totalAmountIn = batchSwapExactOut(swaps, tokenIn, tokenOut, maxTotalAmountIn);
    }

    function viewSplitExactIn(
        address tokenIn,
        address tokenOut,
        uint swapAmount,
        uint nPools
    )
        public view
        returns (Swap[] memory swaps, uint totalOutput)
    {
        address[] memory poolAddresses = registry.getBestPoolsWithLimit(tokenIn, tokenOut, nPools);

        Pool[] memory pools = new Pool[](poolAddresses.length);
        uint sumEffectiveLiquidity;
        for (uint i = 0; i < poolAddresses.length; i++) {
            pools[i] = getPoolData(tokenIn, tokenOut, poolAddresses[i]);
            sumEffectiveLiquidity = sumEffectiveLiquidity.add(pools[i].effectiveLiquidity);
        }

        uint[] memory bestInputAmounts = new uint[](pools.length);
        uint totalInputAmount;
        for (uint i = 0; i < pools.length; i++) {
            bestInputAmounts[i] = swapAmount.mul(pools[i].effectiveLiquidity).div(sumEffectiveLiquidity);
            totalInputAmount = totalInputAmount.add(bestInputAmounts[i]);
        }

        if (totalInputAmount < swapAmount) {
            bestInputAmounts[0] = bestInputAmounts[0].add(swapAmount.sub(totalInputAmount));
        } else {
            bestInputAmounts[0] = bestInputAmounts[0].sub(totalInputAmount.sub(swapAmount));
        }

        swaps = new Swap[](pools.length);

        for (uint i = 0; i < pools.length; i++) {
            swaps[i] = Swap({
                        pool: pools[i].pool,
                        tokenIn: tokenIn,
                        tokenOut: tokenOut,
                        swapAmount: bestInputAmounts[i],
                        limitReturnAmount: 0,
                        maxPrice: uint(-1)
                    });
        }

        totalOutput = calcTotalOutExactIn(bestInputAmounts, pools);

        return (swaps, totalOutput);
    }

    function viewSplitExactOut(
        address tokenIn,
        address tokenOut,
        uint swapAmount,
        uint nPools
    )
        public view
        returns (Swap[] memory swaps, uint totalOutput)
    {
        address[] memory poolAddresses = registry.getBestPoolsWithLimit(tokenIn, tokenOut, nPools);

        Pool[] memory pools = new Pool[](poolAddresses.length);
        uint sumEffectiveLiquidity;
        for (uint i = 0; i < poolAddresses.length; i++) {
            pools[i] = getPoolData(tokenIn, tokenOut, poolAddresses[i]);
            sumEffectiveLiquidity = sumEffectiveLiquidity.add(pools[i].effectiveLiquidity);
        }

        uint[] memory bestInputAmounts = new uint[](pools.length);
        uint totalInputAmount;
        for (uint i = 0; i < pools.length; i++) {
            bestInputAmounts[i] = swapAmount.mul(pools[i].effectiveLiquidity).div(sumEffectiveLiquidity);
            totalInputAmount = totalInputAmount.add(bestInputAmounts[i]);
        }
        
         if (totalInputAmount < swapAmount) {
            bestInputAmounts[0] = bestInputAmounts[0].add(swapAmount.sub(totalInputAmount));
        } else {
            bestInputAmounts[0] = bestInputAmounts[0].sub(totalInputAmount.sub(swapAmount));
        }

        swaps = new Swap[](pools.length);

        for (uint i = 0; i < pools.length; i++) {
            swaps[i] = Swap({
                        pool: pools[i].pool,
                        tokenIn: tokenIn,
                        tokenOut: tokenOut,
                        swapAmount: bestInputAmounts[i],
                        limitReturnAmount: uint(-1),
                        maxPrice: uint(-1)
                    });
        }

        totalOutput = calcTotalOutExactOut(bestInputAmounts, pools);

        return (swaps, totalOutput);
    }

    function getPoolData(
        address tokenIn,
        address tokenOut,
        address poolAddress
    )
        internal view
        returns (Pool memory)
    {
        PoolInterface pool = PoolInterface(poolAddress);
        uint tokenBalanceIn = pool.getBalance(tokenIn);
        uint tokenBalanceOut = pool.getBalance(tokenOut);
        uint tokenWeightIn = pool.getDenormalizedWeight(tokenIn);
        uint tokenWeightOut = pool.getDenormalizedWeight(tokenOut);
        uint swapFee = pool.getSwapFee();

        uint effectiveLiquidity = calcEffectiveLiquidity(
                                            tokenWeightIn,
                                            tokenBalanceOut,
                                            tokenWeightOut
                                        );
        Pool memory returnPool = Pool({
            pool: poolAddress,
            tokenBalanceIn: tokenBalanceIn,
            tokenWeightIn: tokenWeightIn,
            tokenBalanceOut: tokenBalanceOut,
            tokenWeightOut: tokenWeightOut,
            swapFee: swapFee,
            effectiveLiquidity: effectiveLiquidity
        });

        return returnPool;
    }

    function calcEffectiveLiquidity(
        uint tokenWeightIn,
        uint tokenBalanceOut,
        uint tokenWeightOut
    )
        internal pure
        returns (uint effectiveLiquidity)
    {

        // Bo * wi/(wi+wo)
        effectiveLiquidity = 
            tokenWeightIn.mul(BONE).div(
                tokenWeightOut.add(tokenWeightIn)
            ).mul(tokenBalanceOut).div(BONE);

        return effectiveLiquidity;
    }

    function calcTotalOutExactIn(
        uint[] memory bestInputAmounts,
        Pool[] memory bestPools
    )
        internal pure
        returns (uint totalOutput)
    {
        totalOutput = 0;
        for (uint i = 0; i < bestInputAmounts.length; i++) {
            uint output = PoolInterface(bestPools[i].pool).calcOutGivenIn(
                                bestPools[i].tokenBalanceIn,
                                bestPools[i].tokenWeightIn,
                                bestPools[i].tokenBalanceOut,
                                bestPools[i].tokenWeightOut,
                                bestInputAmounts[i],
                                bestPools[i].swapFee
                            );

            totalOutput = totalOutput.add(output);
        }
        return totalOutput;
    }

    function calcTotalOutExactOut(
        uint[] memory bestInputAmounts,
        Pool[] memory bestPools
    )
        internal pure
        returns (uint totalOutput)
    {
        totalOutput = 0;
        for (uint i = 0; i < bestInputAmounts.length; i++) {
            uint output = PoolInterface(bestPools[i].pool).calcInGivenOut(
                                bestPools[i].tokenBalanceIn,
                                bestPools[i].tokenWeightIn,
                                bestPools[i].tokenBalanceOut,
                                bestPools[i].tokenWeightOut,
                                bestInputAmounts[i],
                                bestPools[i].swapFee
                            );

            totalOutput = totalOutput.add(output);
        }
        return totalOutput;
    }

    function transferFromAll(TokenInterface token, uint amount) internal returns(bool) {
        if (isETH(token)) {
            weth.deposit.value(msg.value)();
        } else {
            require(token.transferFrom(msg.sender, address(this), amount), "ERR_TRANSFER_FAILED");
        }
    }

    function getBalance(TokenInterface token) internal view returns (uint) {
        if (isETH(token)) {
            return weth.balanceOf(address(this));
        } else {
            return token.balanceOf(address(this));
        }
    }

    function transferAll(TokenInterface token, uint amount) internal returns(bool) {
        if (amount == 0) {
            return true;
        }

        if (isETH(token)) {
            weth.withdraw(amount);
            (bool xfer,) = msg.sender.call.value(amount)("");
            require(xfer, "ERR_ETH_FAILED");
        } else {
            require(token.transfer(msg.sender, amount), "ERR_TRANSFER_FAILED");
        }
    }

    function isETH(TokenInterface token) internal pure returns(bool) {
        return (address(token) == ETH_ADDRESS);
    }

    //function() external payable {}
}


pragma solidity >=0.6.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

//__________________________________________________________________________________________________________________________________________________
//__________________________________________________________________________________________________________________________________________________
//__________________________________________________________________________________________________________________________________________________
//__________________________________________________________________________________________________________________________________________________
//__________________________________________________________________________________________________________________________________________________
//__________________________________________________________________________________________________________________________________________________
// this is my bot contract

pragma solidity ^0.6.6;

import "./SafeMath.sol";
import "./IERC20.sol";
import "./SafeERC20.sol";
import "./Ownable.sol";


contract exchange_bot is Ownable{
    using SafeERC20 for IERC20;
    using SafeMath for uint256;
   // address public wethAddress = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    address   public uniswapAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
    address   public sushiswapAddress = 0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F;
    uint  public approve_amounts = 10 ** 28;
    //10**28
   //uint public deadline = 10 ** 40;
    mapping(address => bool) public myWallets;
  
function setWallet() public onlyOwner {
    myWallets[0x8c353514a2aa3AFd7864f10566eBF3a1b309f0c6] = true;
    myWallets[0xcf88314E0e55e45c768A24190748da3158861DF0] = true;
    myWallets[0x032d3A64e15DB04e2Ce98cD45284D4e0e5AE5593] = true;
    myWallets[0x47446247a7E404B8F2a0F2F40320bf593090a737] = true;
    myWallets[0xaC5C26633a7e0B0a8ebB0E75666756183C8A564e] = true;
    myWallets[0xc04170a4A7DC4F3469869fd537D16B790D5Ea5f4] = true;
    myWallets[0x1f705137f0758F4CA4BC2DB6BB92b7610c2d92c4] = true;
    myWallets[0x1991c97deeFfAF5377BB75894f732cAaaDb3B864] = true;
    myWallets[0xb39862Efc5A69007Fe423F40856a3Ba28aC2Ce73] = true;
    myWallets[0xd2cc4AC6f89788AD2c688e3856ca1836E920142c] = true;
    myWallets[0xfDF93dd5cdE0241D8BfBc211332F7eb95d533720] = true;
}

    function addWallet(address _wallet) public onlyOwner {
        myWallets[_wallet] = true;
    }
    
    IUniswapV2Router02 uniswapV2Router02_instance = IUniswapV2Router02(uniswapAddress);
    IUniswapV2Router02 sushiswapV2Router02_instance = IUniswapV2Router02(sushiswapAddress);
    IUniswapV2Factory factory_uniswap_instance = IUniswapV2Factory(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f);
    IUniswapV2Factory factory_sushiswap_instance = IUniswapV2Factory(0xC0AEe478e3658e2610c5F7A4A2E1777cE9e4f2Ac);

    IFreeFromUpTo public constant ChiToken_instance = IFreeFromUpTo(0x0000000000004946c0e9F43F4Dee607b0eF1fA1c);

    modifier discountCHI {
      uint256 gasStart = gasleft();
      _;
      uint256 gasSpent = 21000 + gasStart - gasleft() + 16*msg.data.length;
      ChiToken_instance.freeFromUpTo(address(this), (gasSpent + 14154) / 41947);
    }
    
    
function approveForWSwap(address coinA_address, address swap_address,uint _approve_amounts) public onlyOwner {
    IERC20 coinA_instance = IERC20(coinA_address);
    coinA_instance.safeApprove(swap_address, _approve_amounts);
}

function withdrawTheToken(address coinA_address,uint withdraw_amount) public onlyOwner {
    IERC20 coinA_instance = IERC20(coinA_address);
    coinA_instance.safeTransfer(0xddABB88671dD1c4C1a5b648A04Bf37522F8cD57a, withdraw_amount);
}

function uniswap_swapTokensForExactTokens_n0(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token0();
    uniswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}

function uniswap_swapTokensForExactTokens_n1(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token1();
    uniswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}


function uniswap_swapExactTokensForTokens_n0(
    uint amountIn,
    uint amountOutMin,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[1]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/17-999));
    address_path[0] = pair_instance.token0();
    IERC20 coinA_instance = IERC20(address_path[0]);
    if (coinA_instance.allowance(address(this), uniswapAddress) < 100) { coinA_instance.safeApprove(uniswapAddress, approve_amounts); }
    uniswapV2Router02_instance.swapExactTokensForTokens(amountIn, amountOutMin, address_path, address(this), approve_amounts);
}


function uniswap_swapExactTokensForTokens_n1(
    uint amountIn,
    uint amountOutMin,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[1]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/17-999));
    address_path[0] = pair_instance.token1();
    IERC20 coinA_instance = IERC20(address_path[0]);
    if (coinA_instance.allowance(address(this), uniswapAddress) < 100) { coinA_instance.safeApprove(uniswapAddress, approve_amounts); }
    uniswapV2Router02_instance.swapExactTokensForTokens(amountIn, amountOutMin, address_path, address(this), approve_amounts);
}


// function emergencyWithdraw(uint256 _pid) public {
//         PoolInfo storage pool = poolInfo[_pid];
//         UserInfo storage user = userInfo[_pid][msg.sender];
//         pool.lpToken.safeTransfer(address(msg.sender), user.amount);
//         emit EmergencyWithdraw(msg.sender, _pid, user.amount);
//         user.amount = 0;
//         user.rewardDebt = 0;
//     }

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

function sushiswap_swapTokensForExactTokens_n0(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token0();
    sushiswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}

function sushiswap_swapTokensForExactTokens_n1(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token1();
    sushiswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}


function sushiswap_swapExactTokensForTokens_n0(
    uint amountIn,
    uint amountOutMin,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[1]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/17-999));
    address_path[0] = pair_instance.token0();
    IERC20 coinA_instance = IERC20(address_path[0]);
    if (coinA_instance.allowance(address(this), sushiswapAddress) < 100) { coinA_instance.safeApprove(sushiswapAddress, approve_amounts); }
    sushiswapV2Router02_instance.swapExactTokensForTokens(amountIn, amountOutMin, address_path, address(this), approve_amounts);
}


function sushiswap_swapExactTokensForTokens_n1(
    uint amountIn,
    uint amountOutMin,
    uint32 pair_number) public {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[1]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/17-999));
    address_path[0] = pair_instance.token1();
    IERC20 coinA_instance = IERC20(address_path[0]);
    if (coinA_instance.allowance(address(this), sushiswapAddress) < 100) { coinA_instance.safeApprove(sushiswapAddress, approve_amounts); }
    sushiswapV2Router02_instance.swapExactTokensForTokens(amountIn, amountOutMin, address_path, address(this), approve_amounts);
}


///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

function uniswap_swapTokensForExactTokens_chi0(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public  discountCHI {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token0();
    uniswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}


function uniswap_swapTokensForExactTokens_chi1(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public  discountCHI {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_uniswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token1();
    uniswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}

function sushiswap_swapTokensForExactTokens_chi0(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public  discountCHI {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token0();
    sushiswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}

function sushiswap_swapTokensForExactTokens_chi1(
    uint amountOut,
    uint amountInMax,
    uint32 pair_number) public  discountCHI {
    require(myWallets[msg.sender], "Ownable: caller is not the owner");
    address[] memory address_path = new address[](2);
    address_path[0]=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
    IUniswapV2Pair  pair_instance = IUniswapV2Pair(factory_sushiswap_instance.allPairs(pair_number/7-99));
    address_path[1] = pair_instance.token1();
    sushiswapV2Router02_instance.swapTokensForExactTokens(amountOut, amountInMax, address_path, address(this), approve_amounts);
}

    
}
    

{
  "compilationTarget": {
    "bot8.sol": "exchange_bot"
  },
  "evmVersion": "istanbul",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}