import java.util.*;
public class Main{
  public static void main(String[] args) {
    int a;
    String s;

    if(2800<=a && a<3200 && 1<=s.length() && s.length()<=10){

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

    }
  }
}