合約地址：
https://etherscan.io/address/0xc5d105e63711398af9bbff092d4b6769c82f793d#code
function batchTransfer(address[] _receivers, uint256 _value) public whenNotPaused returns (bool) {
uint cnt = _receivers.length;
uint256 amount = uint256(cnt) * _value; //value值很大芦疏，導(dǎo)致溢出
require(cnt > 0 && cnt <= 20);
require(_value > 0 && balances[msg.sender] >= amount); //這里判斷通過(guò)
balances[msg.sender] = balances[msg.sender].sub(amount);
for (uint i = 0; i < cnt; i++) {
balances[_receivers[i]] = balances[_receivers[i]].add(_value);//添加成功
Transfer(msg.sender, _receivers[i], _value);
}
return true;
}
