#include <bits/stdc++.h>

using namespace std;

int main(int argc, char *argv[]) {
    int N, K;
    cin >> N >> K;
    int64_t mx = pow(2, N);
    
    if (K == 0) {
        cout << mx << endl;
    } else {
        int64_t d = pow(2, K);
        cout << mx / d << endl;
    }
	return 0;
}