import java.util.*;
class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    
    int a = sc.nextInt();
    String b = sc.next();
    
    if(a>=3200){
      System.out.println(b);
    }else{
      System.out.println("red");
    }
  }
}