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AoC 2020: day5: power of two multiplication

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Signed-off-by: Ettore Dreucci <ettore.dreucci@gmail.com>
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Ettore Dreucci
2020-12-05 15:23:08 +01:00
parent 529c482d61
commit a7dee4f9db
1 changed files with 1 additions and 6 deletions
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7
2020-python/solutions/day_5.py
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@@ -10,15 +10,11 @@ def read_input(input_path: str) -> list:
seats = list() seats = list()
for entry in entries: for entry in entries:
entry = entry.strip() entry = entry.strip()
row = ''.join(['0' if letter == 'F' else '1' for letter in entry[:7]]) seat = int(''.join(['0' if letter in 'FL' else '1' for letter in entry]), 2)
column = ''.join(['0' if letter == 'L' else '1' for letter in entry[-3:]])
seat = int(row, 2) * 8 + int(column, 2)
seats.append(seat) seats.append(seat)
seats.sort() seats.sort()
return seats return seats
def part1(entries: list) -> int: def part1(entries: list) -> int:
"""part1 solver take a list of strings and return an int""" """part1 solver take a list of strings and return an int"""
return max(entries) return max(entries)
@@ -39,6 +35,5 @@ def main():
end_time = time.time() end_time = time.time()
print("Execution time: %f" % (end_time-start_time)) print("Execution time: %f" % (end_time-start_time))
if __name__ == "__main__": if __name__ == "__main__":
main() main()