using System;

public class Program

{

    static int pow (int x, int y = 2)

    {

        int result = 1;

        for(int i = 0; i < y; i++)

        {

            result *= x;

        }   

        return result;

    }

    public static void Main()

    {

        Console.WriteLine(pow(6));

        Console.WriteLine(pow(3, 4));

    }

}