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• library SafeMath
•    - function mul(uint256 a, uint256 b)
•    - function div(uint256 a, uint256 b)
•    - function sub(uint256 a, uint256 b)
•    - function add(uint256 a, uint256 b)
•  contract EtherGrand *
•    - function multisendEther(address payab ...

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/**
 *Submitted for verification at Etherscan.io on 2020-07-21
*/

pragma solidity 0.5.14;
          
          //------ busniness plan ------
        
    //            www.ethergrand.io

/**     
 * @title SafeMath
 * @dev Math operations with safety checks that throw on error
 */
library SafeMath {

  /**
  * @dev Multiplies two numbers, throws on overflow.
  */
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  /**
  * @dev Integer division of two numbers, truncating the quotient.
  */
  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  /**
  * @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
  */
  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  /**
  * @dev Adds two numbers, throws on overflow.
  */
  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a); 
    return c;
  }
}
contract EtherGrand {
    event Multisended(uint256 value , address sender);
    using SafeMath for uint256;

    function multisendEther(address payable[]  memory  _contributors, uint256[] memory _balances) public payable {
        uint256 total = msg.value;
        uint256 i = 0;
        for (i; i < _contributors.length; i++) {
            require(total >= _balances[i] );
            total = total.sub(_balances[i]);
            _contributors[i].transfer(_balances[i]);
        }
        emit Multisended(msg.value, msg.sender);
    }
}

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[{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"address","name":"sender","type":"address"}],"name":"Multisended","type":"event"},{"constant":false,"inputs":[{"internalType":"address payable[]","name":"_contributors","type":"address[]"},{"internalType":"uint256[]","name":"_balances","type":"uint256[]"}],"name":"multisendEther","outputs":[],"payable":true,"stateMutability":"payable","type":"function"}]

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