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

//#define int long long

typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;}

int A,B;

signed main(){
    cin>>A>>B;
    int ans=1145141919;
    rep(a,1000)rep(b,1000)if(a||b){
        int x=100.0*a/(a+b)+0.5;
        int y=100.0*b/(a+b)+0.5;
        if(A==x&&B==y)chmin(ans,a+b);
    }
    cout<<ans<<endl;
    return 0;
}