/*  ???:?7???????
    ???:1000012896 leo
	????:??7???????
	????:2010.10.17
	*/
int main ()
{
	int n,i = 0,sum = 0;//????
	cin >> n;
	while (i <= n-1)  

	{
		i++;
        if (i % 7 == 0) continue;//?7????????
        if ( i / 10 ==7) continue;//????????7?????
	    if ( (i - (i / 10) * 10) == 7) continue;//????????7?????
        sum  =  sum + i * i;
	}
	cout << sum << endl;
	return 0;
}
