// Vulnerability label: clean
pragma solidity ^0.4.13;

contract Ownable {
  address public owner = msg.sender;

  /// @notice check if the caller is the owner of the contract
  modifier onlyOwner {
    if (msg.sender != owner) throw;
    _;
  }

  /// @notice change the owner of the contract
  /// @param _newOwner the address of the new owner of the contract.
  function changeOwner(address _newOwner)
  onlyOwner
  {
    if(_newOwner == 0x0) throw;
    owner = _newOwner;
  }
}

contract SafeMath{
  function safeMul(uint a, uint b) internal returns (uint) {
    uint c = a * b;
    assert(a == 0 || c / a == b);
    return c;
  }

  function safeDiv(uint a, uint b) internal returns (uint) {
    assert(b > 0);
    uint c = a / b;
    assert(a == b * c + a % b);
    return c;
  }
	
	function safeSub(uint a, uint b) internal returns (uint) {
    	assert(b <= a);
    	return a - b;
  }

	function safeAdd(uint a, uint b) internal returns (uint) {
    	uint c = a + b;
    	assert(c >= a);
    	return c;
  }
	function assert(bool assertion) internal {
	    if (!assertion) {
	      revert();
	    }
	}
}

contract Token {

    function totalSupply() constant returns (uint256 supply) {}

    function balanceOf(address _owner) constant returns (uint256 balance) {}

    function transfer(address _to, uint256 _value) returns (bool success) {}

    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}

    function approve(address _spender, uint256 _value) returns (bool success) {}

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}

    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

contract StandardToken is Token , SafeMath{

    function transfer(address _to, uint256 _value) returns (bool success) {
        if (balances[msg.sender] >= _value && _value > 0) {
            balances[msg.sender] = safeSub(balances[msg.sender], _value);
            balances[_to] = safeAdd(balances[_to],_value);
            Transfer(msg.sender, _to, _value);
            return true;
        } else { return false; }
    }

    function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
         if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
            balances[_to] = safeAdd(balances[_to],_value);
            balances[_from] = safeSub(balances[_from],_value);
            allowed[_from][msg.sender] = safeSub(allowed[_from][msg.sender],_value);
            Transfer(_from, _to, _value);
            return true;
        } else { return false; }
    }

    function balanceOf(address _owner) constant returns (uint256 balance) {
        return balances[_owner];
    }

    function approve(address _spender, uint256 _value) returns (bool success) {
        allowed[msg.sender][_spender] = _value;
        Approval(msg.sender, _spender, _value);
        return true;
    }

    function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
      return allowed[_owner][_spender];
    }

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;
    uint256 public totalSupply;
}

contract multiSend is Ownable, StandardToken {

function multisend(address _tokenAddr, address[] dests, uint256[] values)
    onlyOwner
    returns (uint256) {
        uint256 i = 0;
        while (i < dests.length) {
           StandardToken(_tokenAddr).transfer(dests[i], values[i]);
           i += 1;
        }
        return(i);
    }
}