#include<bits/stdc++.h>
using namespace std;
int n,g,s,b,h;
int main(){
	cin>>n;
	while(n>=1){
		g=n%10;
		s=n/10%10;
		b=n/100;
		if(g!=7&&n%7!=0&&s!=7&&b!=7) h+=n;
		n--;
	}
	cout<<h;
	return 0;
}
/**************************************************************
	Problem: 1393
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/