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 = (1.0*a)/b;

        Console.WriteLine("tong cua {0} va {1} la {2}", b, a, T);

        Console.WriteLine("hieu cua {0} va {1} la {2}", b, a, H);

        Console.WriteLine("tich cua {0} va {1} la {2}", b, a, Tich);

        Console.WriteLine("thuong cua {0} va {1} la {2}", b, a, Thuong);

    }

}