#include <iostream>
#include <cmath>

using namespace std;

int main() {
	int A, B, pa, pb;

	cin >> A >> B;
	for (int i = 1; i <= 200; i++) {
		for (int a = 0; a <= i; a++) {
			int b = i - a;
			pa = round(100.0 * a / i);
			pb = round(100.0 * b / i);
			if (pa == A && pb == B) {
				cout << i << endl;
				return 0;
			}
		}
	}
	return 0;
}