#include using namespace std; int main() { int n; cin >> n; string ans = "NO"; if (6 <= n) { for (int i = 3; i <= 11179; i += 2) { if (n % i == 0 && n / i >= (i + 1) / 2){ ans = "YES"; } } for (int i = 4; i <= 1000000000; i *= 2) { if (n >= (i * (i + 1)) / 2 && (n - (i * (i + 1)) / 2) % i == 0) { ans = "YES"; } } } cout << ans << endl; }