#41325: python


suyueh (suyueh)

學校 : 不指定學校
編號 : 272111
來源 : [125.228.45.241]
最後登入時間 :
2025-06-02 18:21:06

while True:
  try:
    word=input().lower()
  except:
    break
  new=''.join(filter(str.isalpha,word))
  alphas=set(new)
  cunt=[]
  for alpha in alphas:
    cunt.append(new.count(alpha)%2)
  if cunt.count(1)>1:
    print('no...')
  else:
    print('yes !')