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

Group(), Groups() & Groupdict()

  • dilajevolves
     + 0 comments
    s = input()
for i in range(1,len(s)):
    if s[i].isalnum() and s[i] == s[i-1]:
        print(s[i])
        break
else:
    print(-1)