ppnpTest

pragma solidity >= 0.4 .22 < 0.6 .0;
contract Ballot {
    address admin;

    constructor() public {
        admin = msg.sender;
        countOfData = 0;
    }

    mapping(uint => int) public dataStorage;
    uint public countOfData;

    function sum(int a, int b) public returns(int) {
        return a + b;
    }

    function addNumber(int a) public {
        dataStorage[countOfData] = a;
        countOfData++;
    }

    function CountOfData() public returns(uint) {
        return countOfData;
    }
}