#include<algorithm>
#include<complex>
#include<ctype.h>
#include<iomanip>
#include<iostream>
#include<fstream>
#include<map>
#include<math.h>
#include<numeric>
#include<queue>
#include<set>
#include<stack>
#include<stdio.h>
#include<string>
#include<string>
#include<vector>

using namespace std;
typedef long long ll;

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("Yes")
#define p_no() p("No")

const ll mod = 1e9 + 7;
const ll inf = 1e18;

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    ll A, B;
    cin >> A >> B;

    ll min_sum = inf;
    FOR(a, 0, 500){
        FOR(b, 0, 500){
            ll A2 = round(100.0 * a / (a+b));
            ll B2 = round(100.0 * b / (a+b));
            if(A==A2 && B==B2){
                min_sum = min(min_sum, a+b);
            }
        }
    }

    p(min_sum);

    return 0;
}