#include <iostream>
#include <map>
using namespace std;
map<long long, long long> mp;
long long a(long long N){
	if (mp.count(N)){
		return mp[N];
	}
	if (N == 0){
		return 0;
	}
	long long ans = a(N / 3) + a(N / 5);
	mp[N] = ans;
	return ans;
}
int main(){
	long long N;
	cin >> N;
	cout << a(N) << endl;
}