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

    mitzal

    1,940
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    1,629
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    ⛳

    3 / 123 Holes

    🔣

    1 / 62 Langs

    🏆

    2 / 99 Cheevos

    📅

    Card Number Validation in C++ in Chars Play Hole

    15th in C++ and 686th overall.

    Last tested .

    Runtime of .

    Bytes Chars Submitted
    180 180
    190 190
    191 191
    199 199
    241 241
    255 255
    256 256
    260 260