import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Your code here!
        
        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")
        }
    
    }
}