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

int a, b, ans, k, j;
int v[] = {6, 2, 5, 5, 4, 5, 6, 3, 7, 6};
int pot[] = {1, 10, 100, 1000, 10000, 100000, 1000000};

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    cin >> a >> b;

    for(int i=a;i<=b;i++) {
        k = 6, j=i;
        while(k>0 && pot[k] > i) --k;

        for(;k>=0;k--) {
            ans += v[int(j / pot[k])];
            j %= pot[k];
        }
    }
    cout << ans << endl;
    return EXIT_SUCCESS;
}