//*********************
//*???:3.cpp **
//*?????? 1300012754 **
//*???2013.10.11 **
//*??????7??????? **
//*********************
int main()
{
	int n;    //????????
	int result = 0; //?7????????
	cin >> n; //???????????

	for (int i = n; i >= 1; i--)  //?n?????1
	{
		if (i % 10 == 7) //??n????7
		{
			continue;   //???????
		}
		if ((i - 70) >= 0 && (i - 70) <= 9)  //??n????7
		{
			continue;   //???????
		}
		if (i % 7 == 0)  //??n??7??
		{
			continue;   //???????
		}
		result = result + i * i;  //??????????
	}
	cout << result << endl;      //????
	return 0;
}