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    The Calendar hole will go live in approximately . Why not try and solve it ahead of time?

    h-hh-hhh 🇺🇦

    6,773
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    6,391
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    ⛳

    11 / 123 Holes

    🔣

    3 / 62 Langs

    🏆

    12 / 99 Cheevos

    📅

    Card Number Validation in C++ in Bytes Play Hole

    14th in C++ and 738th overall.

    Last tested .

    Runtime of .

    Bytes Chars Submitted
    177 177
    178 178
    180 180