#include <bits/stdc++.h>
using namespace std;

using ll = long long;
#define rep(i, n) for(int i = 0; i < n; i++)

int main() {
	int A, B;
	cin >> A >> B;
	int ans = 1e9;
	rep(a, 1000) rep(b, 1000) {
		int w = a + b;
		if(w == 0) continue;
		double x = a * 100 / double(w);
		double y = b * 100 / double(w);
		if(round(x) == A && round(y) == B) ans = min(ans, a + b);
	}
	cout << ans << endl;
}