code golf meetup 2025 by _

import re, sys
print(
    re.sub(r'(.)\1*',
           lambda m: m.group(1) * (1 if len(m.group(0)) > 1 else 2),
           sys.stdin.read()),
    end=''
)

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

To protect the system from spam, please input your favorite sport (hint: I believe its name must start with 'g', case insensitive)

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