tijie

#include <bits/stdc++.h>
using namespace std;
int akm(int m,int n){
if(m == 0){
return n + 1;
}
else if(m > 0 && n == 0){
return akm(m - 1,1);
}
else return akm(m - 1,akm(m,n - 1));
}
int main(){
int a,b;
cin >> a >> b;
cout << akm(a,b);
}