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