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Add Drew's day 25 solution. #29

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Add Drew's day 25 solution. #29

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16 changes: 16 additions & 0 deletions Drew/drew_day25.py
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Original file line number Diff line number Diff line change
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DOOR_KEY = 9093927
CARD_KEY = 11001876


def establish_secret_key(door_key: int, card_key: int) -> int:

exponent = 0
value = 1
while value != card_key:
exponent += 1
value = 7 * value % 20201227
return pow(door_key, exponent, 20201227)


if __name__ == "__main__":
print(establish_secret_key(DOOR_KEY, CARD_KEY))