    package main
     
    import (
    	"fmt"
    	"bufio"
      	"os"
      	"strconv"
    )
     
    func main() {
    	sc := bufio.NewScanner(os.Stdin)
    	sc.Split(bufio.ScanWords)
     	a := nextInt(sc)
    	s := nextString(sc)
    	fmt.Println(resolve(a, s))
    }
     
    func nextString(sc *bufio.Scanner) string {
    	sc.Scan()
    	return sc.Text()
    }
     
    func nextInt(sc *bufio.Scanner) int64 {
    	i, err := strconv.ParseInt(nextString(sc), 10, 64)
    	if err != nil {
    		panic(err)
    	}
    	return i
    }
     
    func resolve(a int64, s string) string {
    	if a >= 3200 {
    		return "red"
    	}
    	return s
    }