Contract Address Details

// SPDX-License-Identifier: MIT
// File: @openzeppelin/contracts/utils/Context.sol

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;
  }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol

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);
}

// File: @openzeppelin/contracts/math/SafeMath.sol

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, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    uint256 c = a + b;
    if (c < a) return (false, 0);
    return (true, c);
  }

  /**
   * @dev Returns the substraction of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b > a) return (false, 0);
    return (true, a - b);
  }

  /**
   * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
   *
   * _Available since v3.4._
   */
  function tryMul(uint256 a, uint256 b) internal pure returns (bool, 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 (true, 0);
    uint256 c = a * b;
    if (c / a != b) return (false, 0);
    return (true, c);
  }

  /**
   * @dev Returns the division of two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a / b);
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
   *
   * _Available since v3.4._
   */
  function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
    if (b == 0) return (false, 0);
    return (true, a % b);
  }

  /**
   * @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) {
    require(b <= a, 'SafeMath: subtraction overflow');
    return a - b;
  }

  /**
   * @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) {
    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, reverting 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) {
    require(b > 0, 'SafeMath: division by zero');
    return a / b;
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting 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) {
    require(b > 0, 'SafeMath: modulo by zero');
    return a % b;
  }

  /**
   * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
   * overflow (when the result is negative).
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {trySub}.
   *
   * 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);
    return a - b;
  }

  /**
   * @dev Returns the integer division of two unsigned integers, reverting with custom message on
   * division by zero. The result is rounded towards zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryDiv}.
   *
   * 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);
    return a / b;
  }

  /**
   * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
   * reverting with custom message when dividing by zero.
   *
   * CAUTION: This function is deprecated because it requires allocating memory for the error
   * message unnecessarily. For custom revert reasons use {tryMod}.
   *
   * 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;
  }
}

// File: @openzeppelin/contracts/token/ERC20/ERC20.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20 {
  using SafeMath for uint256;

  mapping(address => uint256) private _balances;

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

  uint256 private _totalSupply;

  string private _name;
  string private _symbol;
  uint8 private _decimals;

  /**
   * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
   * a default value of 18.
   *
   * To select a different value for {decimals}, use {_setupDecimals}.
   *
   * All three of these values are immutable: they can only be set once during
   * construction.
   */
  constructor(string memory name_, string memory symbol_) public {
    _name = name_;
    _symbol = symbol_;
    _decimals = 18;
  }

  /**
   * @dev Returns the name of the token.
   */
  function name() public view virtual returns (string memory) {
    return _name;
  }

  /**
   * @dev Returns the symbol of the token, usually a shorter version of the
   * name.
   */
  function symbol() public view virtual returns (string memory) {
    return _symbol;
  }

  /**
   * @dev Returns the number of decimals used to get its user representation.
   * For example, if `decimals` equals `2`, a balance of `505` tokens should
   * be displayed to a user as `5,05` (`505 / 10 ** 2`).
   *
   * Tokens usually opt for a value of 18, imitating the relationship between
   * Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
   * called.
   *
   * NOTE: This information is only used for _display_ purposes: it in
   * no way affects any of the arithmetic of the contract, including
   * {IERC20-balanceOf} and {IERC20-transfer}.
   */
  function decimals() public view virtual returns (uint8) {
    return _decimals;
  }

  /**
   * @dev See {IERC20-totalSupply}.
   */
  function totalSupply() public view virtual override returns (uint256) {
    return _totalSupply;
  }

  /**
   * @dev See {IERC20-balanceOf}.
   */
  function balanceOf(address account) public view virtual override returns (uint256) {
    return _balances[account];
  }

  /**
   * @dev See {IERC20-transfer}.
   *
   * Requirements:
   *
   * - `recipient` cannot be the zero address.
   * - the caller must have a balance of at least `amount`.
   */
  function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    _transfer(_msgSender(), recipient, amount);
    return true;
  }

  /**
   * @dev See {IERC20-allowance}.
   */
  function allowance(address owner, address spender)
    public
    view
    virtual
    override
    returns (uint256)
  {
    return _allowances[owner][spender];
  }

  /**
   * @dev See {IERC20-approve}.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function approve(address spender, uint256 amount) public virtual override returns (bool) {
    _approve(_msgSender(), spender, amount);
    return true;
  }

  /**
   * @dev See {IERC20-transferFrom}.
   *
   * Emits an {Approval} event indicating the updated allowance. This is not
   * required by the EIP. See the note at the beginning of {ERC20}.
   *
   * Requirements:
   *
   * - `sender` and `recipient` cannot be the zero address.
   * - `sender` must have a balance of at least `amount`.
   * - the caller must have allowance for ``sender``'s tokens of at least
   * `amount`.
   */
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) public virtual override returns (bool) {
    _transfer(sender, recipient, amount);
    _approve(
      sender,
      _msgSender(),
      _allowances[sender][_msgSender()].sub(amount, 'ERC20: transfer amount exceeds allowance')
    );
    return true;
  }

  /**
   * @dev Atomically increases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
    _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
    return true;
  }

  /**
   * @dev Atomically decreases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   * - `spender` must have allowance for the caller of at least
   * `subtractedValue`.
   */
  function decreaseAllowance(address spender, uint256 subtractedValue)
    public
    virtual
    returns (bool)
  {
    _approve(
      _msgSender(),
      spender,
      _allowances[_msgSender()][spender].sub(
        subtractedValue,
        'ERC20: decreased allowance below zero'
      )
    );
    return true;
  }

  /**
   * @dev Moves tokens `amount` from `sender` to `recipient`.
   *
   * This is internal function is equivalent to {transfer}, and can be used to
   * e.g. implement automatic token fees, slashing mechanisms, etc.
   *
   * Emits a {Transfer} event.
   *
   * Requirements:
   *
   * - `sender` cannot be the zero address.
   * - `recipient` cannot be the zero address.
   * - `sender` must have a balance of at least `amount`.
   */
  function _transfer(
    address sender,
    address recipient,
    uint256 amount
  ) internal virtual {
    require(sender != address(0), 'ERC20: transfer from the zero address');
    require(recipient != address(0), 'ERC20: transfer to the zero address');

    _beforeTokenTransfer(sender, recipient, amount);

    _balances[sender] = _balances[sender].sub(amount, 'ERC20: transfer amount exceeds balance');
    _balances[recipient] = _balances[recipient].add(amount);
    emit Transfer(sender, recipient, amount);
  }

  /** @dev Creates `amount` tokens and assigns them to `account`, increasing
   * the total supply.
   *
   * Emits a {Transfer} event with `from` set to the zero address.
   *
   * Requirements:
   *
   * - `to` cannot be the zero address.
   */
  function _mint(address account, uint256 amount) internal virtual {
    require(account != address(0), 'ERC20: mint to the zero address');

    _beforeTokenTransfer(address(0), account, amount);

    _totalSupply = _totalSupply.add(amount);
    _balances[account] = _balances[account].add(amount);
    emit Transfer(address(0), account, amount);
  }

  /**
   * @dev Destroys `amount` tokens from `account`, reducing the
   * total supply.
   *
   * Emits a {Transfer} event with `to` set to the zero address.
   *
   * Requirements:
   *
   * - `account` cannot be the zero address.
   * - `account` must have at least `amount` tokens.
   */
  function _burn(address account, uint256 amount) internal virtual {
    require(account != address(0), 'ERC20: burn from the zero address');

    _beforeTokenTransfer(account, address(0), amount);

    _balances[account] = _balances[account].sub(amount, 'ERC20: burn amount exceeds balance');
    _totalSupply = _totalSupply.sub(amount);
    emit Transfer(account, address(0), amount);
  }

  /**
   * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
   *
   * This internal function is equivalent to `approve`, and can be used to
   * e.g. set automatic allowances for certain subsystems, etc.
   *
   * Emits an {Approval} event.
   *
   * Requirements:
   *
   * - `owner` cannot be the zero address.
   * - `spender` cannot be the zero address.
   */
  function _approve(
    address owner,
    address spender,
    uint256 amount
  ) internal virtual {
    require(owner != address(0), 'ERC20: approve from the zero address');
    require(spender != address(0), 'ERC20: approve to the zero address');

    _allowances[owner][spender] = amount;
    emit Approval(owner, spender, amount);
  }

  /**
   * @dev Sets {decimals} to a value other than the default one of 18.
   *
   * WARNING: This function should only be called from the constructor. Most
   * applications that interact with token contracts will not expect
   * {decimals} to ever change, and may work incorrectly if it does.
   */
  function _setupDecimals(uint8 decimals_) internal virtual {
    _decimals = decimals_;
  }

  /**
   * @dev Hook that is called before any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * will be to transferred to `to`.
   * - when `from` is zero, `amount` tokens will be minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}
}

// File: @openzeppelin/contracts/utils/Address.sol

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);
  }

  /**
   * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
   * but performing a delegate call.
   *
   * _Available since v3.4._
   */
  function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
    return functionDelegateCall(target, data, 'Address: low-level delegate call failed');
  }

  /**
   * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
   * but performing a delegate call.
   *
   * _Available since v3.4._
   */
  function functionDelegateCall(
    address target,
    bytes memory data,
    string memory errorMessage
  ) internal returns (bytes memory) {
    require(isContract(target), 'Address: delegate call to non-contract');

    // solhint-disable-next-line avoid-low-level-calls
    (bool success, bytes memory returndata) = target.delegatecall(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);
      }
    }
  }
}

// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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');
    }
  }
}

pragma solidity >=0.6.0 <0.9.0;

interface IUniswapRouterETH {
  function addLiquidity(
    address tokenA,
    address tokenB,
    uint256 amountADesired,
    uint256 amountBDesired,
    uint256 amountAMin,
    uint256 amountBMin,
    address to,
    uint256 deadline
  )
    external
    returns (
      uint256 amountA,
      uint256 amountB,
      uint256 liquidity
    );

  function addLiquidityETH(
    address token,
    uint256 amountTokenDesired,
    uint256 amountTokenMin,
    uint256 amountETHMin,
    address to,
    uint256 deadline
  )
    external
    payable
    returns (
      uint256 amountToken,
      uint256 amountETH,
      uint256 liquidity
    );

  function removeLiquidity(
    address tokenA,
    address tokenB,
    uint256 liquidity,
    uint256 amountAMin,
    uint256 amountBMin,
    address to,
    uint256 deadline
  ) external returns (uint256 amountA, uint256 amountB);

  function removeLiquidityETH(
    address token,
    uint256 liquidity,
    uint256 amountTokenMin,
    uint256 amountETHMin,
    address to,
    uint256 deadline
  ) external returns (uint256 amountToken, uint256 amountETH);

  function swapExactTokensForTokens(
    uint256 amountIn,
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external returns (uint256[] memory amounts);

  function swapExactETHForTokens(
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external payable returns (uint256[] memory amounts);

  function swapExactTokensForETH(
    uint256 amountIn,
    uint256 amountOutMin,
    address[] calldata path,
    address to,
    uint256 deadline
  ) external returns (uint256[] memory amounts);

  function getAmountsOut(uint256 amountIn, address[] calldata path)
    external
    view
    returns (uint256[] memory amounts);
}

pragma solidity ^0.6.0;

interface IUniswapV2Pair {
  function factory() external view returns (address);

  function token0() external view returns (address);

  function token1() external view returns (address);

  function burn(address to) external returns (uint256 amount0, uint256 amount1);

  function getReserves()
    external
    view
    returns (
      uint112 reserve0,
      uint112 reserve1,
      uint32 blockTimestampLast
    );
}

pragma solidity ^0.6.0;

interface IMasterChef {
  function deposit(uint256 _pid, uint256 _amount) external;

  function withdraw(uint256 _pid, uint256 _amount) external;

  function enterStaking(uint256 _amount) external;

  function leaveStaking(uint256 _amount) external;

  function userInfo(uint256 _pid, address _user) external view returns (uint256, uint256);

  function emergencyWithdraw(uint256 _pid) external;
}

// File: @openzeppelin/contracts/access/Ownable.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @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 virtual 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;
  }
}

// File: @openzeppelin/contracts/utils/Pausable.sol

pragma solidity >=0.6.0 <0.8.0;

/**
 * @dev Contract module which allows children to implement an emergency stop
 * mechanism that can be triggered by an authorized account.
 *
 * This module is used through inheritance. It will make available the
 * modifiers `whenNotPaused` and `whenPaused`, which can be applied to
 * the functions of your contract. Note that they will not be pausable by
 * simply including this module, only once the modifiers are put in place.
 */
abstract contract Pausable is Context {
  /**
   * @dev Emitted when the pause is triggered by `account`.
   */
  event Paused(address account);

  /**
   * @dev Emitted when the pause is lifted by `account`.
   */
  event Unpaused(address account);

  bool private _paused;

  /**
   * @dev Initializes the contract in unpaused state.
   */
  constructor() internal {
    _paused = false;
  }

  /**
   * @dev Returns true if the contract is paused, and false otherwise.
   */
  function paused() public view virtual returns (bool) {
    return _paused;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is not paused.
   *
   * Requirements:
   *
   * - The contract must not be paused.
   */
  modifier whenNotPaused() {
    require(!paused(), 'Pausable: paused');
    _;
  }

  /**
   * @dev Modifier to make a function callable only when the contract is paused.
   *
   * Requirements:
   *
   * - The contract must be paused.
   */
  modifier whenPaused() {
    require(paused(), 'Pausable: not paused');
    _;
  }

  /**
   * @dev Triggers stopped state.
   *
   * Requirements:
   *
   * - The contract must not be paused.
   */
  function _pause() internal virtual whenNotPaused {
    _paused = true;
    emit Paused(_msgSender());
  }

  /**
   * @dev Returns to normal state.
   *
   * Requirements:
   *
   * - The contract must be paused.
   */
  function _unpause() internal virtual whenPaused {
    _paused = false;
    emit Unpaused(_msgSender());
  }
}

pragma solidity ^0.6.12;

contract StratManager is Ownable, Pausable {
  /**
   * @dev Contracts:
   * {keeper} - Address to manage a few lower risk features of the strat
   * {strategist} - Address of the strategy author/deployer where strategist fee will go.
   * {vault} - Address of the vault that controls the strategy's funds.
   * {unirouter} - Address of exchange to execute swaps.
   */
  address public keeper;
  address public strategist;
  address public unirouter;
  address public vault;
  address public feeRecipient;

  /**
   * @dev Initializes the base strategy.
   * @param _keeper address to use as alternative owner.
   * @param _strategist address where strategist fees go.
   * @param _unirouter router to use for swaps
   * @param _feeRecipient address where to send fees.
   */
  constructor(
    address _keeper,
    address _strategist,
    address _unirouter,
    address _feeRecipient
  ) public {
    keeper = _keeper;
    strategist = _strategist;
    unirouter = _unirouter;
    feeRecipient = _feeRecipient;
  }

  // checks that caller is either owner or keeper.
  modifier onlyManager() {
    require(msg.sender == owner() || msg.sender == keeper, '!manager');
    _;
  }

  /**
   * @dev Updates address of the strat keeper.
   * @param _keeper new keeper address.
   */
  function setKeeper(address _keeper) external onlyManager {
    keeper = _keeper;
  }

  /**
   * @dev Updates address where strategist fee earnings will go.
   * @param _strategist new strategist address.
   */
  function setStrategist(address _strategist) external {
    require(msg.sender == strategist, '!strategist');
    strategist = _strategist;
  }

  /**
   * @dev Updates router that will be used for swaps.
   * @param _unirouter new unirouter address.
   */
  function setUnirouter(address _unirouter) external onlyOwner {
    unirouter = _unirouter;
  }

  /**
   * @dev Updates parent vault.
   * @param _vault new vault address.
   */
  function setVault(address _vault) external onlyOwner {
    vault = _vault;
  }

  /**
   * @dev Updates fee recipient.
   * @param _feeRecipient new fee recipient address.
   */
  function setfeeRecipient(address _feeRecipient) external onlyOwner {
    feeRecipient = _feeRecipient;
  }

  /**
   * @dev Function to synchronize balances before new user deposit.
   * Can be overridden in the strategy.
   */
  function beforeDeposit() external virtual {}
}

pragma solidity ^0.6.12;

abstract contract FeeManager is StratManager {
  uint256 public constant STRATEGIST_FEE = 400;
  uint256 public constant MAX_FEE = 1000;
  uint256 public constant MAX_CALL_FEE = 111;

  uint256 public constant WITHDRAWAL_FEE_CAP = 50;
  uint256 public constant WITHDRAWAL_MAX = 10000;

  uint256 public withdrawalFee = 0;

  uint256 public callFee = 0;
  uint256 public fee = MAX_FEE - STRATEGIST_FEE - callFee;

  function setCallFee(uint256 _fee) public onlyManager {
    require(_fee <= MAX_CALL_FEE, '!cap');

    callFee = _fee;
    fee = MAX_FEE - STRATEGIST_FEE - callFee;
  }

  function setWithdrawalFee(uint256 _fee) public onlyManager {
    require(_fee <= WITHDRAWAL_FEE_CAP, '!cap');

    withdrawalFee = _fee;
  }
}

pragma solidity >=0.6.0 <0.8.0;

library StringUtils {
  function concat(string memory a, string memory b) internal pure returns (string memory) {
    return string(abi.encodePacked(a, b));
  }
}

pragma solidity ^0.6.0;

contract StrategyCommonChefLP is StratManager, FeeManager {
  using SafeERC20 for IERC20;
  using SafeMath for uint256;

  // Tokens used
  address public native;
  address public output;
  address public want;
  address public lpToken0;
  address public lpToken1;

  // Third party contracts
  address public chef;
  uint256 public poolId;

  bool public harvestOnDeposit;
  uint256 public lastHarvest;
  string public pendingRewardsFunctionName;

  // Routes
  address[] public outputToNativeRoute;
  address[] public outputToLp0Route;
  address[] public outputToLp1Route;

  event StratHarvest(address indexed harvester, uint256 wantHarvested, uint256 tvl);
  event Deposit(uint256 tvl);
  event Withdraw(uint256 tvl);

  constructor(
    address _want,
    uint256 _poolId,
    address _chef,
    address _unirouter,
    address _keeper,
    address _strategist,
    address _feeRecipient,
    address[] memory _outputToNativeRoute,
    address[] memory _outputToLp0Route,
    address[] memory _outputToLp1Route
  ) public StratManager(_keeper, _strategist, _unirouter, _feeRecipient) {
    want = _want;
    poolId = _poolId;
    chef = _chef;

    output = _outputToNativeRoute[0];
    native = _outputToNativeRoute[_outputToNativeRoute.length - 1];
    outputToNativeRoute = _outputToNativeRoute;

    // setup lp routing
    lpToken0 = IUniswapV2Pair(want).token0();
    require(_outputToLp0Route[0] == output, 'outputToLp0Route[0] != output');
    require(
      _outputToLp0Route[_outputToLp0Route.length - 1] == lpToken0,
      'outputToLp0Route[last] != lpToken0'
    );
    outputToLp0Route = _outputToLp0Route;

    lpToken1 = IUniswapV2Pair(want).token1();
    require(_outputToLp1Route[0] == output, 'outputToLp1Route[0] != output');
    require(
      _outputToLp1Route[_outputToLp1Route.length - 1] == lpToken1,
      'outputToLp1Route[last] != lpToken1'
    );
    outputToLp1Route = _outputToLp1Route;

    _giveAllowances();
  }

  // puts the funds to work
  function deposit() public whenNotPaused {
    uint256 wantBal = IERC20(want).balanceOf(address(this));

    if (wantBal > 0) {
      IMasterChef(chef).deposit(poolId, wantBal);
      emit Deposit(balanceOf());
    }
  }

  function withdraw(uint256 _amount) external {
    require(msg.sender == vault, '!vault');

    uint256 wantBal = IERC20(want).balanceOf(address(this));

    if (wantBal < _amount) {
      IMasterChef(chef).withdraw(poolId, _amount.sub(wantBal));
      wantBal = IERC20(want).balanceOf(address(this));
    }

    if (wantBal > _amount) {
      wantBal = _amount;
    }

    if (tx.origin != owner() && !paused()) {
      uint256 withdrawalFeeAmount = wantBal.mul(withdrawalFee).div(WITHDRAWAL_MAX);
      wantBal = wantBal.sub(withdrawalFeeAmount);
    }

    IERC20(want).safeTransfer(vault, wantBal);

    emit Withdraw(balanceOf());
  }

  function beforeDeposit() external override {
    if (harvestOnDeposit) {
      require(msg.sender == vault, '!vault');
      _harvest(tx.origin);
    }
  }

  function harvest() external virtual {
    _harvest(tx.origin);
  }

  function harvest(address callFeeRecipient) external virtual {
    _harvest(callFeeRecipient);
  }

  function managerHarvest() external onlyManager {
    _harvest(tx.origin);
  }

  // compounds earnings and charges performance fee
  function _harvest(address callFeeRecipient) internal whenNotPaused {
    IMasterChef(chef).deposit(poolId, 0);
    uint256 outputBal = IERC20(output).balanceOf(address(this));
    if (outputBal > 0) {
      chargeFees(callFeeRecipient);
      addLiquidity();
      uint256 wantHarvested = balanceOfWant();
      deposit();

      lastHarvest = block.timestamp;
      emit StratHarvest(msg.sender, wantHarvested, balanceOf());
    }
  }

  // performance fees
  function chargeFees(address callFeeRecipient) internal {
    uint256 toNative = IERC20(output).balanceOf(address(this)).mul(45).div(1000);
    IUniswapRouterETH(unirouter).swapExactTokensForTokens(
      toNative,
      0,
      outputToNativeRoute,
      address(this),
      now
    );

    uint256 nativeBal = IERC20(native).balanceOf(address(this));

    if(callFee > 0) {
      uint256 callFeeAmount = nativeBal.mul(callFee).div(MAX_FEE);
      IERC20(native).safeTransfer(callFeeRecipient, callFeeAmount);
    }

    uint256 feeAmount = nativeBal.mul(fee).div(MAX_FEE);
    IERC20(native).safeTransfer(feeRecipient, feeAmount);

    uint256 strategistFee = nativeBal.mul(STRATEGIST_FEE).div(MAX_FEE);
    IERC20(native).safeTransfer(strategist, strategistFee);
  }

  // Adds liquidity to AMM and gets more LP tokens.
  function addLiquidity() internal {
    uint256 outputHalf = IERC20(output).balanceOf(address(this)).div(2);

    if (lpToken0 != output) {
      IUniswapRouterETH(unirouter).swapExactTokensForTokens(
        outputHalf,
        0,
        outputToLp0Route,
        address(this),
        now
      );
    }

    if (lpToken1 != output) {
      IUniswapRouterETH(unirouter).swapExactTokensForTokens(
        outputHalf,
        0,
        outputToLp1Route,
        address(this),
        now
      );
    }

    uint256 lp0Bal = IERC20(lpToken0).balanceOf(address(this));
    uint256 lp1Bal = IERC20(lpToken1).balanceOf(address(this));
    IUniswapRouterETH(unirouter).addLiquidity(
      lpToken0,
      lpToken1,
      lp0Bal,
      lp1Bal,
      1,
      1,
      address(this),
      now
    );
  }

  // calculate the total underlaying 'want' held by the strat.
  function balanceOf() public view returns (uint256) {
    return balanceOfWant().add(balanceOfPool());
  }

  // it calculates how much 'want' this contract holds.
  function balanceOfWant() public view returns (uint256) {
    return IERC20(want).balanceOf(address(this));
  }

  // it calculates how much 'want' the strategy has working in the farm.
  function balanceOfPool() public view returns (uint256) {
    (uint256 _amount, ) = IMasterChef(chef).userInfo(poolId, address(this));
    return _amount;
  }

  function setPendingRewardsFunctionName(string calldata _pendingRewardsFunctionName)
    external
    onlyManager
  {
    pendingRewardsFunctionName = _pendingRewardsFunctionName;
  }

  // returns rewards unharvested
  function rewardsAvailable() public view returns (uint256) {
    string memory signature = StringUtils.concat(pendingRewardsFunctionName, '(uint256,address)');
    bytes memory result = Address.functionStaticCall(
      chef,
      abi.encodeWithSignature(signature, poolId, address(this))
    );
    return abi.decode(result, (uint256));
  }

  // native reward amount for calling harvest
  function callReward() public view returns (uint256) {
    uint256 outputBal = rewardsAvailable();
    uint256 nativeOut;
    if (outputBal > 0) {
      try IUniswapRouterETH(unirouter).getAmountsOut(outputBal, outputToNativeRoute) returns (
        uint256[] memory amountOut
      ) {
        nativeOut = amountOut[amountOut.length - 1];
      } catch {}
    }

    return nativeOut.mul(45).div(1000).mul(callFee).div(MAX_FEE);
  }

  function setHarvestOnDeposit(bool _harvestOnDeposit) external onlyManager {
    harvestOnDeposit = _harvestOnDeposit;

    if (harvestOnDeposit) {
      setWithdrawalFee(0);
    } else {
      setWithdrawalFee(10);
    }
  }

  // called as part of strat migration. Sends all the available funds back to the vault.
  function retireStrat() external {
    require(msg.sender == vault, '!vault');

    IMasterChef(chef).emergencyWithdraw(poolId);

    uint256 wantBal = IERC20(want).balanceOf(address(this));
    IERC20(want).transfer(vault, wantBal);
  }

  // pauses deposits and withdraws all funds from third party systems.
  function panic() public onlyManager {
    pause();
    IMasterChef(chef).emergencyWithdraw(poolId);
  }

  function pause() public onlyManager {
    _pause();

    _removeAllowances();
  }

  function unpause() external onlyManager {
    _unpause();

    _giveAllowances();

    deposit();
  }

  function _giveAllowances() internal {
    IERC20(want).safeApprove(chef, uint256(-1));
    IERC20(output).safeApprove(unirouter, uint256(-1));

    IERC20(lpToken0).safeApprove(unirouter, 0);
    IERC20(lpToken0).safeApprove(unirouter, uint256(-1));

    IERC20(lpToken1).safeApprove(unirouter, 0);
    IERC20(lpToken1).safeApprove(unirouter, uint256(-1));
  }

  function _removeAllowances() internal {
    IERC20(want).safeApprove(chef, 0);
    IERC20(output).safeApprove(unirouter, 0);
    IERC20(lpToken0).safeApprove(unirouter, 0);
    IERC20(lpToken1).safeApprove(unirouter, 0);
  }

  function outputToNative() external view returns (address[] memory) {
    return outputToNativeRoute;
  }

  function outputToLp0() external view returns (address[] memory) {
    return outputToLp0Route;
  }

  function outputToLp1() external view returns (address[] memory) {
    return outputToLp1Route;
  }
}

pragma solidity ^0.6.12;

interface IGasPrice {
  function maxGasPrice() external returns (uint256);
}

pragma solidity ^0.6.12;

contract GasThrottler {
  bool public shouldGasThrottle = true;

  address public gasprice = address(0x27A362aEF318A52A07463FfF6AFA5e870E347f99);

  modifier gasThrottle() {
    if (shouldGasThrottle && Address.isContract(gasprice)) {
      require(tx.gasprice <= IGasPrice(gasprice).maxGasPrice(), 'gas is too high!');
    }
    _;
  }
}

pragma solidity ^0.6.0;

contract StrategyCommonChefLPMilkomeda is StrategyCommonChefLP, GasThrottler {
  constructor(
    address _want,
    uint256 _poolId,
    address _chef,
    address _unirouter,
    address _keeper,
    address _strategist,
    address _feeRecipient,
    address[] memory _outputToNativeRoute,
    address[] memory _outputToLp0Route,
    address[] memory _outputToLp1Route
  )
    public
    StrategyCommonChefLP(
      _want,
      _poolId,
      _chef,
      _unirouter,
      _keeper,
      _strategist,
      _feeRecipient,
      _outputToNativeRoute,
      _outputToLp0Route,
      _outputToLp1Route
    )
  {}

  function harvest() external override whenNotPaused gasThrottle {
    _harvest(tx.origin);
  }

  function harvest(address callFeeRecipient) external override gasThrottle {
    _harvest(callFeeRecipient);
  }
}