40 lines
1.0 KiB
Python
40 lines
1.0 KiB
Python
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#!/usr/bin/env python
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def read_input(filename):
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with open(filename) as f:
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for line in f:
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line = line.strip()
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yield line.split(" ")
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def is_safe(levels):
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tmp = [ (int(levels[i-1]) - int(levels[i])) for i in range(1,len(levels))]
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tmp2 = [ abs(x) for x in tmp]
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if (abs(sum(tmp)) != sum(tmp2)):
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return False
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tmp3 = [x for x in tmp2 if x in [1,2,3]]
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if len(tmp3) != len(tmp2):
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return False
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return True
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def main(args):
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safe_count = 0
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for levels in read_input(args.file):
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if (is_safe(levels)):
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safe_count += 1
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continue
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for i in range(len(levels)):
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tmp2 = levels[:i] + levels[i+1 :]
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if is_safe(tmp2):
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safe_count += 1
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break
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print(safe_count)
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if __name__ == "__main__":
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import argparse
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parser = argparse.ArgumentParser(
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prog='AdventOfCode 2024, Day 02, part 2',
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)
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parser.add_argument('-f', '--file', required=True)
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args = parser.parse_args()
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main(args)
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