#include<bits/stdc++.h>
using namespace std;
int i=1,n,s,s1;
int main(){
	cin>>n;
	while(i<=n){
		s1=0;
		if(i%2==0) s1++;
		if(i%5==0) s1++;
		if(i%3==0) s1++;
		if(i%7==0) s1++;
		if(s1>=2){
			s+=i;
		}
		i++;
	}
	cout<<s;
	return 0;
}
/**************************************************************
	Problem: 1449
	User: zhangziang
	Language: C++
	Result: Accepted
	Time:19 ms
	Memory:2072 kb
****************************************************************/