Problem: There are N balls placed in a row. AtCoDeer the deer is painting each of these in one of the K colors of his paint cans. For aesthetic reasons, any two adjacent balls must be painted in different colors.

Find the number of the possible ways to paint the balls.

Constraints

* 1≦N≦1000
* 2≦K≦1000
* The correct answer is at most 2^{31}-1.

Input

The input is given from Standard Input in the following format:


N K


Output

Print the number of the possible ways to paint the balls.

Examples

Input

2 2


Output

2


Input

1 10


Output

10

Solution (in JAVA):

Solution:
    import java.util.Scanner;
    public class Main {
    	public static void main(String[] args) {
    		Scanner sc=new Scanner(System.in);
    		int n=sc.nextInt(),k=sc.nextInt();
    		System.out.println(k*(int)Math.pow(k-1, n-1));
    		sc.close();
    	}
    }