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pragma solidity 0.8.20;
import '@openzeppelin/contracts/access/Ownable2Step.sol';

// SPDX-License-Identifier: Apache-2.0

/**
 *
 * Batcher
 * =======
 *
 * Contract that can take a batch of transfers, presented in the form of a recipients array and a values array, and
 * funnel off those funds to the correct accounts in a single transaction. This is useful for saving on gas when a
 * bunch of funds need to be transferred to different accounts.
 *
 * If more ETH is sent to `batch` than it is instructed to transfer, then the entire transaction will revert
 * If any tokens are accidentally transferred to this account, contact the contract owner in order to recover them.
 *
 */

contract Batcher is Ownable2Step {
  event BatchTransfer(address sender, address recipient, uint256 value);
  event TransferGasLimitChange(
    uint256 prevTransferGasLimit,
    uint256 newTransferGasLimit
  );

  uint256 public lockCounter;
  uint256 public transferGasLimit;

  constructor(uint256 _transferGasLimit) Ownable(msg.sender) {
    lockCounter = 1;
    transferGasLimit = _transferGasLimit;
    emit TransferGasLimitChange(0, transferGasLimit);
  }

  modifier lockCall() {
    lockCounter++;
    uint256 localCounter = lockCounter;
    _;
    require(localCounter == lockCounter, 'Reentrancy attempt detected');
  }

  /**
   * Transfer funds in a batch to each of recipients
   * @param recipients The list of recipients to send to
   * @param values The list of values to send to recipients.
   *  The recipient with index i in recipients array will be sent values[i].
   *  Thus, recipients and values must be the same length
   */
  function batch(address[] calldata recipients, uint256[] calldata values)
    external
    payable
    lockCall
  {
    require(recipients.length != 0, 'Must send to at least one person');
    require(
      recipients.length == values.length,
      'Unequal recipients and values'
    );
    require(recipients.length < 256, 'Too many recipients');

    uint256 totalSent = 0;

    // Try to send all given amounts to all given recipients
    // Revert everything if any transfer fails
    for (uint8 i = 0; i < recipients.length; i++) {
      require(recipients[i] != address(0), 'Invalid recipient address');
      emit BatchTransfer(msg.sender, recipients[i], values[i]);
      (bool success, ) = recipients[i].call{
        value: values[i],
        gas: transferGasLimit
      }('');
      require(success, 'Send failed');

      totalSent += values[i];
    }

    require(totalSent == msg.value, 'Total sent out must equal total received');
  }

  /**
   * Recovery function for the contract owner to recover any ERC20 tokens or ETH that may get lost in the control of this contract.
   * @param to The recipient to send to
   * @param value The ETH value to send with the call
   * @param data The data to send along with the call
   */
  function recover(
    address to,
    uint256 value,
    bytes calldata data
  ) external onlyOwner returns (bytes memory) {
    (bool success, bytes memory returnData) = to.call{ value: value }(data);
    require(success, 'Recover failed');
    return returnData;
  }

  /**
   * Change the gas limit that is sent along with batched transfers.
   * This is intended to protect against any EVM level changes that would require
   * a new amount of gas for an internal send to complete.
   * @param newTransferGasLimit The new gas limit to send along with batched transfers
   */
  function changeTransferGasLimit(uint256 newTransferGasLimit)
    external
    onlyOwner
  {
    require(newTransferGasLimit >= 2300, 'Transfer gas limit too low');
    emit TransferGasLimitChange(transferGasLimit, newTransferGasLimit);
    transferGasLimit = newTransferGasLimit;
  }

  fallback() external payable {
    revert('Invalid fallback');
  }

  receive() external payable {
    revert('Invalid receive');
  }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol)

pragma solidity ^0.8.20;

import {Context} from "../utils/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.
 *
 * The initial owner is set to the address provided by the deployer. 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;

    /**
     * @dev The caller account is not authorized to perform an operation.
     */
    error OwnableUnauthorizedAccount(address account);

    /**
     * @dev The owner is not a valid owner account. (eg. `address(0)`)
     */
    error OwnableInvalidOwner(address owner);

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

    /**
     * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
     */
    constructor(address initialOwner) {
        if (initialOwner == address(0)) {
            revert OwnableInvalidOwner(address(0));
        }
        _transferOwnership(initialOwner);
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

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

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        if (owner() != _msgSender()) {
            revert OwnableUnauthorizedAccount(_msgSender());
        }
    }

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

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable2Step.sol)

pragma solidity ^0.8.20;

import {Ownable} from "./Ownable.sol";

/**
 * @dev Contract module which provides access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * The initial owner is specified at deployment time in the constructor for `Ownable`. This
 * can later be changed with {transferOwnership} and {acceptOwnership}.
 *
 * This module is used through inheritance. It will make available all functions
 * from parent (Ownable).
 */
abstract contract Ownable2Step is Ownable {
    address private _pendingOwner;

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

    /**
     * @dev Returns the address of the pending owner.
     */
    function pendingOwner() public view virtual returns (address) {
        return _pendingOwner;
    }

    /**
     * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one.
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual override onlyOwner {
        _pendingOwner = newOwner;
        emit OwnershipTransferStarted(owner(), newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner.
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual override {
        delete _pendingOwner;
        super._transferOwnership(newOwner);
    }

    /**
     * @dev The new owner accepts the ownership transfer.
     */
    function acceptOwnership() public virtual {
        address sender = _msgSender();
        if (pendingOwner() != sender) {
            revert OwnableUnauthorizedAccount(sender);
        }
        _transferOwnership(sender);
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol)

pragma solidity ^0.8.20;

/**
 * @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 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) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

{
  "evmVersion": "paris",
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

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00000000000000000000000000000000000000000000000000000000000124f8

-----Decoded View---------------
Arg [0] : _transferGasLimit (uint256): 75000

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000000000000000000000000000124f8