#include using namespace std; using ll = long long; #define rep(i, srt, end) for (long long i = (srt); i < (long long)(end); i++) void solve() { ll n; cin >> n; ll cnt = 0; while(n) { cnt += n % 3; n /= 3; } cout << (cnt % 2 ? "NO" : "YES") << endl; } int main() { ios::sync_with_stdio(false); cin.tie(nullptr); solve(); return 0; }