#include "bits/stdc++.h"
using namespace std;
#define FOR(i,j,k) for(int (i)=(j);(i)<(int)(k);++(i))
#define rep(i,j) FOR(i,0,j)
#define each(x,y) for(auto &(x):(y))
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define debug(x) cout<<#x<<": "<<(x)<<endl
#define smax(x,y) (x)=max((x),(y))
#define smin(x,y) (x)=min((x),(y))
#define MEM(x,y) memset((x),(y),sizeof (x))
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<ll> vll;

int A, B;

int main(){
    while(cin >> A >> B){
        int ans = INT_MAX, x, y;
        for(int a = 0; a <= 1000; ++a)for(int b = 0; b <= 1000; ++b){
            if(a == 0 && b == 0)continue;
            x = (200 * a + a + b) / (2 * (a + b));
            y = (200 * b + a + b) / (2 * (a + b));
            if(x == A && y == B)smin(ans, a + b);
        }
        cout << ans << endl;
    }
}