#include <iostream>
#include <map>
using namespace std;
map<long long,long long> A;
long long solve(long long n){
  long long ans = 0;
  if(A[n]){
    return A[n];
  }
  ans += solve(n/5);
  ans += solve(n/3);
  A[n] = ans;
  return ans;
}

int main(){
  A[0] = 1;
  long long n;cin>>n;
  cout << solve(n) << endl;
}