ide = input().strip()

count = 9 #數字從右到左乘1到8，代表從左到右乘8到1

Num = 0

dict = {"A": 10, "J": 18, "S": 26, "B": 11, "K": 19, "T": 27, "C": 12, "L": 20, "U": 28, "D": 13, "M": 21, "V": 29, "E": 14,"N": 22, "W": 32, "F": 15, "O": 35, "X": 30, "G": 16, "P": 23, "Y": 31, "H": 17, "Q": 24, "Z": 33, "I": 34, "R": 25} #建立字典

for i in ide:

  if count == 9: #因為一開始一定是英文

    EN = str(dict[i]) #紀錄英文數字，並拆開轉字串

    Num = eval("{}+{}*9".format(EN[0],EN[1])) #計算出第一碼

  elif count == 0:

    Num = Num + int(i)

  else:

    Num = Num + int(i) * count

  count = count - 1

if Num % 10 == 0:

  print("real")

else:

  print("fake")

 

如果有更好的優化，麻煩請跟我說，謝謝