#include<iostream> using namespace std; int main() { int n,p; cin>>n; p=n%6; if (p==1){ cout<<"红"; } else if (p==2){ cout<<"红"; } else if (p==3){ cout<<"红"; } else if (p==4){ cout<<"黄"; } else if (p==5){ cout<<"黄"; } else{ cout<<"白"; } return 0; }