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

int main(){
    int a, b;
    cin >> a >> b;
    int ans = 10000000;
	for(int i = 0; i < 101; i++){
		for(int j = 0; j < 101; j++){
			if(a == round(100.0 * i / (i + j)) and b == round(100.0 * j / (i + j))){
				ans = min(ans, i + j);
			}
		}
	}
	cout << ans << endl;
    return 0;
}