Maybe due to stdio synchronisation? This can be turned off. https://en.cpprefere... | Hacker News

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jpcooper on March 15, 2021 | parent | context | favorite | on: Performance comparison: counting words in Python, ...

Maybe due to stdio synchronisation? This can be turned off.

https://en.cppreference.com/w/cpp/io/ios_base/sync_with_stdi...

usefulcat on March 16, 2021 [–]

He did that:

    "This line makes it run almost twice as fast:
    ios::sync_with_stdio(false);"

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