#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
int INF = 1e9;
int MOD = 1e9+7;
main(){
    int A,B,minsum = 10000;
    cin >> A >> B;
    for(int i = 0;i <= 1000;i++){
        for(int j = 0;j <= 1000;j++){
            if(!i && !j)continue;
            if(A == round(100.*i/(i+j)) && 
                B == round(100.*j/(i+j))){
                minsum = min(minsum,i+j);
            }
        }
    }
    cout << minsum << endl;
}