#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 if(m>0&&n>0) return akm(m-1,akm(m,n-1)); } int main(){ int a,b; cin>>a>>b; cout<<akm(a,b); return 0; }