#include <iostream> #include <string> #include <algorithm> #include <vector> #include <iomanip> #include <cmath> #include <stdio.h> #include <queue> #include <deque> #include <cstdio> #include <set> #include <map> #include <bitset> #include <stack> #include <cctype> using namespace std; int main() { int a; cin >> a; for (int i = 2; i * i <= a; i++) { if (a % i == 0) { cout << "YES" << endl; return 0; } } cout << "NO" << endl; return 0; }