#include<cstdio> using namespace std; int akm(int m,int n){ if(m==0) return n+1; else{ if(n==0) return akm(m-1,1); else return akm(m-1,akm(m,n-1)); } } int main(){ int a,b; scanf("%d%d",&a,&b); printf("%d",akm(a,b)); return 0; }