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

#define loop(i,b,e) for(int i=b;i<=e;i++)
#define reloop(i,e,b) for(int i=e;i>=b;i--)

int holes(int n) {
    int h=0;
    if (n == 0)
        return 1;
    while (n != 0) {
        if (n%10 == 0 || n%10 == 6 || n%10 == 9)
           h += 1;
        if (n%10 == 8)
            h += 2;
        n /=10;
    }
    return h;
}

int a,b,maxh,ans;

int main() {
    cin >> a >> b;
    loop(i,a,b) {
        if (maxh < holes(i)) {
            ans = i;
            maxh = holes(i);
        }
    }
    cout << ans;
}