#include <algorithm>
#include <cfloat>
#include <cmath>
#include <iostream>
using namespace std;

int main() {
	double A, B;
	cin >> A >> B;
	double ans = DBL_MAX;
	for (double a = 0.0; a <= 200.0; ++a) {
		for (double b = 0.0; b <= 200.0; ++b) {
			if (a != 0.0 || b != 0.0) {
				if (A == round(100.0 * a / (a + b)) && B == round(100.0 * b / (a + b))) ans = min(a + b, ans);
			}
		}
	}
	cout << ans;
}