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  1. import fileinput
  2.  
  3. words = set() #NOTE: it is unordered but it doesn't affect the result
  4. tokens = (token for line in fileinput.input() for token in line.split())
  5. for op, word in zip(*[tokens]*2):
  6.     if op == '+':
  7.         words.add(word)
  8.     elif op == '-':
  9.         words.discard(word)
  10.     elif op == '?':
  11.         print(word, "Yes" if word in words else "No")
Success #stdin #stdout 0.04s 9440KB
comments (?)
stdin 
+ The + donation + will + go + toward + the ? CDC - Global + Disaster + Response 
- The 
    ? The
        ? will
stdout 
CDC No
The No
will Yes
https://ideone.com/6Y6cl0
language:
Python 3 (python  3.12)
created:
11 years ago
visibility:
secret

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