#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    int A,B;
    cin >> A >> B;
    
    int ans = INT_MAX;
    for ( double a = 0; a <= 10000; a++ ) {
    for ( double b = 0; b <= 10000; b++ ) {
        
        if ( a+b < 1 ) { continue; }
        
        int c =  static_cast<int>(round(100.0 * a / (a + b)));
        int d =  static_cast<int>(round(100.0 * b / (a + b)));
        
        if ( A == c && B == d ) {
            ans = min( ans, static_cast<int>(a+b) );
        }
    }
    }
    
    cout << ans << endl;
    
    return 0;
}