using System;

public class mio 

{

    public static int numA= 4;

    public static int productoA;

    public static int numB= 32

    public static int productoB;

    public static int productoC;

public static void Main()

{

    Class1 A = new Class1();

   productoA = A.Buscar(numA);

   Console.WriteLine("[" +productoA+"]");

   productoB = A.A.Buscar(numB);

   Console.WriteLine("[" +productoB+"]");

   productoC = A.A.Buscar(12);

   Console.WritLine("[" +productoC+"]");

   productoC = A.Buscar(productoA * 3);

   Console.WriteLine("[" +productoC+"]");

   }

namespace tuyo

{

public class Class1

{

   public int Buscar(int i)

   {

     int input = i;

     return input * input;

     }

    }

}