using System; 

public class Program

{

    public static bool isPower (int x, int y) 

    {

        if (x == 1) 

        return (y == 1); 

        int pow = 1; 

        while (pow < y) 

        pow = pow * x; 

        return (pow == y); 

    } 

    public static void Main () 

    { 

        Console.WriteLine(isPower(10, 1) ? 1 : 0); 

        Console.WriteLine(isPower(1, 20) ? 1 : 0); 

        Console.WriteLine(isPower(2, 128) ? 1 : 0); 

        Console.WriteLine(isPower(2, 30) ? 1 : 0); 

    } 

}     

​