#include<iostream>
#include<string>
#include<math.h>
#include<stdlib.h>
#include<string>
using namespace std;


int main() {
	int n, k;
	cin >> n >> k;
	int sum;
	int number = 0;
	sum = pow(2, n);
	number = pow(2, k);
	number = sum / number;
	cout << number ;
}