#include <fstream>
#include <set>

using namespace std;

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

set<float> v;

int main() {
	int n, m;
	cin >> n >> m;
	for (int i = 1; i < n; i++) {
		for (int j = 1; j < m; j++) {
				v.insert(1.f * i / j);
		}
	}
	cout << v.size();
	return 0;
}