using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(power(2,3));

    }

    static int power(int x, int y) {

  if(y == 0){

    return 1;

  }

    if(y == 1){

    return x;

  }

  if(y == 2){

    return x*x;

  }

​

  return x*  power(x,y-1);   

}

​

}