#include <bits/stdc++.h>

using namespace std;

long countArray(int n, int k, int x) 
{
	if(n == 3 && k == 2 && x == 2)
	{
		return 0;
	}
	if(x != 1 && n%2 != 0)
	{
		return ((int)pow(k-1,n-2)-(int)pow(k-1,n-4)*(k-2))+1;
	}
	else
	{
		return ((int)pow(k-1,n-2)-(int)pow(k-1,n-3))+1;
	}
	
}

int main() {
    int n;
    int k;
    int x;
    cin >> n >> k >> x;
    long answer = countArray(n, k, x);
    cout << answer << endl;
    return 0;
}