#include<iostream>
#include <math.h>
using namespace std;
int shishagonyu(double x)
{
	return (int)(x < 0.0 ? x - 0.5 : x + 0.5);
}
int main() {
	double a, b, A, B,s=1000;
	double ans;
	cin >> A >> B;
	if (A > B) swap(A, B);
	for (a = 1; a < 5; a++) {
		for (b = a; b < 200; b++) {
			ans = (100*b / (a + b));
			ans = shishagonyu(ans);
			if (B == ans) {
				if (s > a + b) {
					s = a + b;
				}
			}
		}
	}
	cout << s << endl;
	return 0;
}