# include<iostream> using namespace std; int main (){ int a; cin>>a; if(a % 400 == 0){ cout<<"a YES"<<endl; } else{ if (a %4 ==0) { if(a % 100 !=0){ cout<<"a YES"<<endl; }else{ cout<<"a NO"<<endl; } }else { cout<<"a NO"<<endl; } } return 0; }