n = int(input("n: "))
m = int(input("m: "))
for i in range(n, m):
  if(i%5 == 0):
    print(i)
    break

vowels = "aeiouAEIOU"
#Write your code here 
while True:
  c =input("vowel, or -1 to quit: ")
  if c.isalpha() or c == "-1":
    if c == "-1":
      break
    if c in vowels:
      print("vowel")
    else:
      print("not vowel")
  else:
    print("wrong input")
    continue