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

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