// Template #define FORESTED #include "bits/stdc++.h" #define rep_override(x, y, z, name, ...) name #define rep2(i, n) for (int i = 0; i < (int)(n); ++i) #define rep3(i, l, r) for (int i = (int)(l); i < (int)(r); ++i) #define rep(...) rep_override(__VA_ARGS__, rep3, rep2)(__VA_ARGS__) #define per(i, n) for (ll i = (ll)(n) - 1; i >= 0; --i) #define all(x) (x).begin(), (x).end() using namespace std; using ll = long long; constexpr int inf = 1001001001; constexpr ll INF = 3003003003003003003LL; template inline bool chmin(T &x, const T &y) { if (x > y) { x = y; return true; } return false; } template inline bool chmax(T &x, const T &y) { if (x < y) { x = y; return true; } return false; } struct IOSET { IOSET() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(10); } } ioset; template istream &operator>>(istream &is, vector &vec) { for (T &element : vec) is >> element; return is; } template vector operator--(vector &vec) { for (T &element : vec) --element; return vec; } // Main int main() { int a; cin >> a; for (int i = 1; i * i <= a; ++i) { if (a % i) continue; int j = a / i; if ((i % 2) && i >= 3) { cout << "YES\n"; return 0; } if ((j % 2) && j >= 3) { cout << "YES\n"; return 0; } } for (int i = 1; i * i <= 2 * a; ++i) { if (2 * a % i) continue; int j = 2 * a / i; if ((i % 2) && i >= 3) { cout << "YES\n"; return 0; } if ((j % 2) && j >= 3) { cout << "YES\n"; return 0; } } cout << "NO\n"; }