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 CPP):

Solution:
#include<stdio.h>
int main(){
int qiu,se,sum,k;
sum=1;
scanf("%d %d",&qiu,&se);
sum=sum*se;
for(qiu;qiu=qiu-1;qiu>0){

	sum=sum*(se-1);
}
printf("%d",sum);
}