using System;

public class Program

{

    public static void Main()

    {

         int a = 12;

            int b = 5;

            int T = a + b;

            int H = a - b;

            int Tich = a * b;

            double Thuong = a / (1.0 * b);

            Console.WriteLine($"Tong cua {a} va {b} la {T}");

            Console.WriteLine($"Hieu cua {a} va {b} la {H}");

            Console.WriteLine($"Tich cua {a} va {b} la {Tich}");

            Console.WriteLine($"Thuong cua {a} va {b} la {Thuong}");

​

​

​

    }

}