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s-prechtl 2022-12-09 08:29:06 +01:00
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if __name__ == '__main__':
highest = 0
with open("input.txt", "r") as f:
raw = f.read().split("\n")
seatIDs = []
for less in raw:
row = int(less[:7].replace("F", "0").replace("B", "1"), 2)
seatnum = int(less[-3:].replace("L", "0").replace("R", "1"), 2)
seatID = row*8+seatnum
seatIDs.append(seatID)
seatIDs = sorted(seatIDs)
mySeat = set(range(seatIDs[0], seatIDs[-1])) - set(seatIDs)
print(mySeat)