AC

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