The Card Number Validation hole will go live in . Why not try and solve it ahead of time?

rucin93 🇵🇱

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I'm not sure what am i doing, but it works

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108 / 108 Holes

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Evil Numbers in Java in Chars Play Hole

5th in Java and 362nd overall.

Last tested .

Bytes Chars Submitted
97 97
98 98