import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = Integer.parseInt(sc.next());
    String s = sc.next();

    if(a>=3200){
      System.out.println(s);
    }
    else{
      System.out.println("red");
    }
  }
} 