#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
//#include<cctype>
#include<climits>
#include<iostream>
#include<string>
#include<vector>
#include<map>
//#include<list>
#include<queue>
#include<deque>
#include<algorithm>
//#include<numeric>
#include<utility>
#include<complex>
//#include<memory>
#include<functional>
#include<cassert>
#include<set>
#include<stack>

const int dx[] = {1, 0, -1, 0};
const int dy[] = {0, 1, 0, -1};
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    int aa, bb;
    cin >> aa >> bb;
    for (int ab = 1; ab < 1000; ab++) {
        for (int a = 0; a <= ab; a++) {
            int b = ab-a;
            int A = 100.*a/ab+0.5;
            int B = 100.*b/ab+0.5;
            if (A==aa && B==bb) {
                cout << ab << endl;
                return 0;
            }
        }
    }
    return 0;
}