#include <bits/stdc++.h>
using namespace std;

int main(){
  int N;
  cin>>N;
  /*for(int i=3;i<=(max(3,N/2));i+=2){
    if(N%i ==0){
      cout<<"YES"<<endl;
      return 0;
    }
  }
  if(N%2 == 0 && (N/2)%2 != 0){
    cout<<"YES"<<endl;
    return 0;
  }
  cout<<"NO"<<endl;
  return 0;
  */
  if(N==1){
    cout<<"NO"<<endl;
    return 0;
  }
  cout<<"YES"<<endl;
}