#include <bits/stdc++.h>

using namespace std;

int a[101];

int main()
{
   // freopen("input.txt","r",stdin);
    int n,m;

     cin >> m >> n;

      a[0] = 1;
      for(int i = 1; i <= n; i++)
        for(int j = 1; j <= m; j++)
      {
          a[i] = a[i-1];
          if (i >= m) a[i] = a[i] + a[i-m];
      }

       cout << a[n];
}