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53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
"""AOC 2020 Day 25"""
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import pathlib
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import time
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TEST_INPUT = """5764801
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17807724"""
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def read_input(input_path: str) -> str:
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"""take input file path and return a str with the file's content"""
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with open(input_path, 'r') as input_file:
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input_data = input_file.read().strip()
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return input_data
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def extract(input_data: str) -> tuple:
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"""take input data and return the appropriate data structure"""
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return tuple(map(int, input_data.splitlines()))
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def part1(entries: tuple) -> int:
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"""part1 solver"""
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card_key, door_key = entries
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loop_size = 0
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key = 1
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while key not in (card_key, door_key):
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loop_size += 1
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key = (key * 7) % 20201227
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if key == card_key:
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return pow(door_key, loop_size, 20201227)
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return pow(card_key, loop_size, 20201227)
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def test_input_day_25():
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"""pytest testing function"""
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entries = extract(TEST_INPUT)
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assert part1(entries) == 14897079
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def test_bench_day_25(benchmark):
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"""pytest-benchmark function"""
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benchmark(main)
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def main():
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"""main function"""
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input_path = str(pathlib.Path(__file__).resolve().parent.parent) + "/inputs/" + str(pathlib.Path(__file__).stem)
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start_time = time.time()
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input_data = read_input(input_path)
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entries = extract(input_data)
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print("Part 1: %s" % part1(entries))
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end_time = time.time()
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print("Execution time: %f" % (end_time-start_time))
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if __name__ == "__main__":
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main()
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