import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int a = sc.nextInt();
		// 文字の入力
		String s = sc.next();

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