//********************************
//*????7???????   **
//*?????? 1300012861 **
//*???2013.10.10  **
//********************************
int main()
{
	int n, i, m, sum; //???????????
	sum = 0; //????
	cin >> n;
	for (i = 1; i <= n; i++) //n???
	{
		m = i / 10; //???????m???????7
		if (i % 7 == 0)
			continue; //??7????????????
		if ((i - 7) % 10 == 0) //????????7
			continue; 
		if (m == 7)
			continue; //????7??????????
		sum = sum + i * i; //???7????????
	}
	cout << sum << endl; 
	return 0;
}
