using System;

public class Program

{

    public static void Main()

    {

        int x, y, z;

            Console.WriteLine("nhap x:");

            string s = Console.ReadLine();

            x = int.Parse(s);

​

            Console.WriteLine("nhap y: ");

            string b = Console.ReadLine();

            y = int.Parse(b);

​

​

            z = x + y;

​

            Console.WriteLine("tong z = {0}+{1}", x, y);

    }

}