#include <bits/stdc++.h>

using namespace std;

int main() {
    int A, B;
    cin >> A >> B;
    int ans = 1e9;
    for (int a = 0; a <= 1000; a++) {
        for (int b = 0; b <= 1000; b++) {
            if (a | b) {
                if (A == round(100.0 * a / (a + b)) && B == round(100.0 * b / (a + b))) {
                    ans = min(ans, a + b);
                    //cout << a << " " << b << endl;
                }
            }
        }
    }
    cout <<  ans << endl;
    return 0;
}