# include <bits/stdc++.h>
using namespace std;
typedef long long ll; 
// # define int long long
# define lc u << 1
# define rc u << 1 | 1
# define fi first
# define se second

int A, B;
int getround (double x)  { return x > 0 ? x + 0.5 : x - 0.5; }
signed main ()
{
    // freopen ("poll.in", "r", stdin); freopen ("poll.out", "w", stdout);
    scanf ("%d%d", &A, &B);
    int ans = 1e9;
    for (int a = 1; a <= 1000; a ++ )
    {
        for (int b = 1; b <= 1000; b ++ )
        {
            int t = (a + b);
            if (getround (100.0 * a / t) == A && getround (100.0 * b / t) == B)
                ans = min (ans, t);
        }
    }
    printf ("%d\n", ans);
    return 0;
}