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

int main() {
	int A, B;
	cin >> A >> B;
	for (int i = 0; i <= 200; i++) {
		for (int j = 0; j <= 200 - i; j++) {
			if (i + j > 0) {
				if (A == round(100 * i / (double)(i + j))
					&& B == round(100 * j / (double)(i + j))) {
						cout << i + j << endl;
						return 0;
				}
			}
		}
	}
	return 0;
}