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  1. Prepare
  2. Python
  3. Regex and Parsing
  4. Group(), Groups() & Groupdict()
  5. Discussions

Group(), Groups() & Groupdict()

  • loucifsk
     + 0 comments
    import sys, re

S = sys.stdin.read()
S = re.sub(r"[\W|_]*", '', S)

match = re.search(r"(\w)\1{1,}", S)

if match:
    print(match.group()[0])
else:
    print('-1')