        import java.util.*;
        import java.lang.*;
        import java.io.*; 
         
         
        class solution {
            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("red");
               else
                 System.out.println(s);
            }
          }