    import java.util.*;
    import java.lang.*;
    import java.io.*; 
     
     
    class solution {
        public static void main(String[] args){
          Sacnner sc  = new Scanner(System.in);
          int a= sc.nextInt();
          String s = sc.next();
           if(a<3200)
             System.out.println("red");
           else
             System.out.println(s);
        }
      }