using System;

public class Program

{

    class Pravougulnik

    {private int a;

     private int b;

     public Pravougulnik(int a,int b)

     {this.a=a;

      this.b=b;}

    public static void Main()

    { 

        int a;

        int b;

        Console.WriteLine("Vuvedi a:");

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

        Console.WriteLine("Vuvedi b:");

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

        Pravougulnik mypr=new Pravougulnik(a,b);

        Console.WriteLine("s=",a*b);

    }

    }}