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

bool isRel7(int n) { if (n % 7 == 0) return true; while (n > 0) { if (n % 10 == 7) return true; n /= 10; } return false; }

int main() { int n; cin >> n; int sum = 0; for (int i = 1; i <= n; ++i) { if (!isRel7(i)) { / sum += i * i; } } cout << sum << endl; return 0; }