import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
      	//入力
		int n = sc.nextInt();
      	String str = sc.next();
      
      if(n>=3200){
      	System.out.println(str);
      }else{
        System.out.println("red");
     }
    }
}