using System;

public class Program

{

    public static void Main()

    {

 int n1 = 0; int n2 = 0; int sum = 0; int i =0;

    for (i =1; i<=5; i++){

    Console.WriteLine("write a number ");

    n1 = int.Parse(Console.ReadLine());

        Console.WriteLine("write a number ");

    n2 = int.Parse(Console.ReadLine());

        sum = n1 * n2;

        Console.WriteLine("Sum :" + sum );

    }

}}