#include <bits/stdc++.h>
using namespace std;
int main(){
	int i,a,b,c,n,h=0;
	cin>>n;
	for(i=1;i<=n;i++){
		a=i%10;
		b=i/10%10;
		c=i/100;
		if(a!=7&&b!=7&&c!=7&&i%7!=0){
			h=h+i;
			
		}

	} 
	cout<<h;

}

/**************************************************************
	Problem: 1393
	User: 15159808820
	Language: C++
	Result: Accepted
	Time:21 ms
	Memory:2072 kb
****************************************************************/