#include <bits/stdc++.h>

using namespace std;

signed main() {
    int n;
    while (cin >> n) {
        long long res = 0;
        for (int i = 1; i <= n; i++) if (!(i % 7 == 0 || to_string(i).find('7') != string::npos)) res += i * i;
        cout << res << '\n';
    }   
    return 0;
}