#include <bits/stdc++.h>
using namespace std;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int n;
cin >> n;
if(n % 2 == 0){
if((n/2) % 2== 0){
cout << "SI";
}else{
cout << "NO";
}
}else{
cout << "NO";
}
}
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