#include <bits/stdc++.h> #include<iostream> #include<map> #include<vector> #include <algorithm> #include<math.h> #include <iomanip> #include<set> #include <numeric> #include<string> using ll = long long; using namespace std; int main() { ll n, dsum = 0; string s; cin >> n; while (n){ s = to_string(n%3) + s; n /= 3; } for (int i = 0; i < s.size(); i++){ dsum += (s[i] - '0'); } cout << ((dsum%2) ? "NO" : "YES") << endl; }