int main()
{
	int n;
	int sum=0;
	int i=1;
	scanf("%d",&n);
	while(i<=n){
		if(i%7!=0&&((int)(i/10)-7)%10!=0&&(i-7)%10!=0&&i!=7){
			sum=i*i+sum;
		}
		i++;
	}
	printf("%d",sum);
	return 0;
}