int main()
{
	int n, a, s;                                          //????n??a,????????s

	a = 1;                                                //a?????????????1

	s = 0;                                                //s?????0

	cin >> n;                                             //??n

	for (int p=1; p <= n; p++)                            //????

	{
		if (a%7 != 0 && (a-7)%10 != 0 && (a/10) != 7 )    //??a???7????

		{
			s = s + a * a;                                //?????

		}

		a = a + 1;                                        
	}

	cout << s << endl;                                    //?????

	return 0;
}


			


