#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() 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 m,n; cin>>m>>n; cout<<akm(m,n); return 0; }