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");
        }
    } 
}