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

    fourth-bit

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    Card Number Validation in Python in Bytes Play Hole

    49th in Python and 352nd overall.

    Last tested .

    Runtime of .

    Bytes Chars Submitted
    105 105
    106 106
    108 108
    109 109
    115 115
    118 118
    119 119
    121 121
    125 125
    135 135
    145 145
    156 156