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