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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 batchTransfer *
•    - function batchTransfer()
•    - function distribute(address[] myAddre ...

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/**
 *Submitted for verification at Etherscan.io on 2018-05-28
*/

pragma solidity ^0.4.21;

/**
 * @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 Subtracts 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 batchTransfer {
    using SafeMath for uint256;
    
    uint public totalEther;
    
    function batchTransfer() public {
        totalEther = 0;
    }
    
    function distribute(address[] myAddresses) public payable {
            require(myAddresses.length>0);
            
            uint256 value = msg.value;
            uint256 length = myAddresses.length;
            uint256 distr = value.div(length);
            
            if(length==1)
            {
               myAddresses[0].transfer(value);
            }else
            {
                for(uint256 i=0;i<(length.sub(1));i++)
                {
                    myAddresses[i].transfer(distr);
                    value = value.sub(distr);
                }
                myAddresses[myAddresses.length-1].transfer(value);
            }
            
            totalEther = totalEther.add(msg.value);
    }
}

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[{"constant":false,"inputs":[{"name":"myAddresses","type":"address[]"}],"name":"distribute","outputs":[],"payable":true,"stateMutability":"payable","type":"function"},{"constant":true,"inputs":[],"name":"totalEther","outputs":[{"name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"inputs":[],"payable":false,"stateMutability":"nonpayable","type":"constructor"}]

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