#include <bits/stdc++.h> using namespace std; int akm(int m, int n) { if(m == 0) return n + 1; if(m > 0 && n == 0) return akm(m - 1, 1); if(m > 0 && n > 0) return akm(m - 1, akm(m, n - 1)); } int main() { int m, n; cin >> m >> n; cout << akm(m, n) << endl; return 0; } /*akm(m,n) if(m == 0) akm(m, n) = n + 1; if(m > 0 && n == 0) akm(m, n) = akm(m - 1, 1); if(m > 0 && n > 0) akm(m, n) = akm(m - 1, akm(m, n - 1));*/ //https://www.luogu.com.cn/problem/P1036