import java.util.*;
import java.io.*;
class Test{
	public static void main(String [] args){
    	
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));


      
        int a = Integer.parseInt(br.readLine());

        String s = br.readLine();
      
        if(a<3200){
        	System.out.println("red");
        }
        else{
          System.out.println(s);
        } 
    }
}
