import java.util.*;
import java.math.*;
class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);

    int a= sc.nextInt();
    String s=sc.next();
    if(a==3200) {
      System.out.println(s);
    } else {
      System.out.println("red");
    }
    
  }
}