#include <iostream>
#include <algorithm>
#include <functional>
#include <string>
#include <climits>
#include <vector>
#include <numeric>
#include <complex>
#include <map>
using namespace std;

//#define __int64 long long
#define long __int64
#define REP(i,a,b) for(int i=a;i<b;i++)
#define rep(i,n) REP(i,0,n)
const int Vecy[4] = {0,-1,0,1};
const int Vecx[4] = {1,0,-1,0};

int main(){
	int l;
	int n;
	int ans;
	
	cin >> l >> n;
	
	ans = pow(2,(l - 3)) + 0.2;
	ans *= n;
	cout << ans << endl;
	
    
    return 0;
}