include[HTML_REMOVED]
using namespace std;
bool f(int x)
{
if(!(x%7))return false;// 此处注意!的优先级大于%号
while(x){
if(x%10==7)return false;
x/=10;
}return true;
}
int main(){
int n;
cin>>n;
long long s=0;
for(int i=1;i<=n;i++)
if(f(i))s+=i*i;
cout<<s;
return 0;
}