nefu 115
#include<iostream> using namespace std; int main() { int n; while(cin>>n) { if(n%12==0) cout<<"YES"<<endl; else { if(n%4==0) cout<<"3"<<endl; else if(n%6==0) cout<<"4"<<endl; else cout<<"NO"<<endl; } } }
// 斐波那契数列 f1=1 f2=1 则 3整除fn 等价于4整除n 4|fn <=> 6|n