void main()
{int a[30]={7,14,17,21,27,28,35,37,42,47,49,56,57,63,67,70,71,72,73,74,75,76,77,78,79,84,87,91,97,98};
 int n,s1=0,s2=0,i,j;
 scanf("%d",&n);
 for(i=1;i<=n;i++)
	 s1+=i*i;
 for(j=0;j<30;j++)
 {if(a[j]<=n) 
 s2+=a[j]*a[j];}
 printf("%d\n",s1-s2);
}