#include <iostream>
#include <cstdlib>
using namespace std;

void jump(int pos, short n, short k);
unsigned long long m = 0;

int main()
{
    short k,n;
    cin >> k >> n;

    jump(0, n, k);

    cout << m << endl;

    return 0;
}

void jump(int pos, short n, short k)
{
    int i;

    for(i = 1; i <= k; i++)
        if (!(pos + i > n)){
            if(pos + i == n)
                m++;
            else
                jump(pos+i, n, k);
        } else continue;

}