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

/**************************************************************
	Problem: 1393
	User: tangkaixuan
	Language: C++
	Result: Wrong Answer
****************************************************************/