/* -*- coding: utf-8 -*-
 *
 * 639.cc: No.639 An Ordinary Sequence - yukicoder
 */

#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<set>
#include<stack>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<functional>
 
using namespace std;

/* constant */

const int K = 5000000;

/* typedef */

typedef long long ll;

/* global variables */

ll as[K];

/* subroutines */

ll rec(ll n) {
  return (n < K) ? as[n] : rec(n / 3) + rec(n / 5);
}

/* main */

int main() {
  as[0] = 1;
  for (int i = 1; i < K; i++) as[i] = as[i / 3] + as[i / 5];

  ll n;
  cin >> n;

  printf("%lld\n", rec(n));
  return 0;
}