#include <fstream>
#include <set>

using namespace std;

ifstream in("mins.in");
ofstream out("mins.out");

set < double > st;

int c, d;

int main() {

    in >> c >> d;
    for (int x = 1; x < c; x++)
        for (int y = 1; y < d; y++)
            st.insert(1. * y / x);

    out << st.size();

    return 0;
}