#include<iostream>
#include<cmath>
#include<cstdio>
#include<algorithm>
using namespace std;
int main(){
	int n;
	cin >> n;
	int res = 0;
	for(int i = 1;i<=n;i++){
		if(i%7 == 0){
			continue;
		}
		if(i%10 == 7){
			continue;
		}
		if(i/10 == 7){
			continue;
		}
		res += i*i;
	}
	cout << res;
	return 0;
}