// No.932 解法破綻！高橋君
package main

import (
	"fmt"
	"slices"
	"strings"
)

func main() {
	var s string
	fmt.Scan(&s)
	ss := strings.Split(s, ",")
	slices.Sort(ss)
	uniq := slices.Compact(ss)
	if uniq[0] == "AC" && len(uniq) == 1 {
		fmt.Println("Done!")
	} else {
		fmt.Println("Failed...")
	}

}