/*???:?7???????
**?  ?:??
**?  ?:2010?10?16?
*/
int main()
{
	int n, i, sum = 0;//??????
	cin >> n;
	if (n > 0 && n < 100)
		for (i = 1;i <= n;i++)
		{
			if (i % 7 != 0)//?i???7???
			{
				if (i <= 9)//i?1???
			{sum = sum + i * i;}//????
				else if ((i / 10) != 7 && (i % 10) != 7)//?i?2????????7?
					sum = sum + i * i;//????
			}
		}
		cout << sum << endl;
		return 0;
}
