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OI-codes/Luogu/P1244/P1244.cpp

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2020-11-01 10:33:39 +00:00
#include <bits/stdc++.h>
using namespace std;
int main() {
int h, k;
cin >> h >> k;
cout << (k + 1) * (1 << h) << endl;
return 0;
}