import java.util.*;

public class Main { //クラス名は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");
      }
    }
}