import java.io.PrintWriter;
import java.util.*;

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

        int a = sc.nextInt();
        String s = sc.next();

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

}