/**
 * ? ? ???7???????.cpp    
 * ?    ?????             
 * ?????2010?10?15?      
 * ???????????????7???????
*/
int main()			      //???
{											    //?????
	int i = 0, sum = 0 , n;           //?????????
		cin>>n;                 //?????
	while( i < n )                      //????
	{
		i = i + 1;               //???i??
if ( i % 7 == 0 || ((0 <= (i-70)) && ((i-70) <= 9))||((i - floor(i/10)*10) == 7))                              //???????7??
		{continue;}         //??????????                
	    sum = sum + i*i;								//???7???????
	}
	cout<<sum<<endl;             //???7???????
	return 0;
}                                           //?????
