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day20 - formula simplification

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This commit is contained in:
Stefan Harmuth 2024-12-21 06:00:39 +01:00
parent 3a3d018078
commit dbd7c236a9
1 changed files with 4 additions and 6 deletions
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day20.py
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@ -5,15 +5,13 @@ from typing import Any
def get_cheat_count(track: list[Coordinate], check_len: int, need_save: int = 100) -> int:
total_dist = len(track)
ans = 0
for i, c in enumerate(track[:-need_save]):
for j, n in enumerate(track[i + 2 :]):
for j, n in enumerate(track[i + need_save :]):
dist = c.getDistanceTo(n, algorithm=DistanceAlgorithm.MANHATTAN, includeDiagonals=False)
if dist > check_len:
if dist > check_len or j - dist < 0:
continue
saved = total_dist - (i + dist + (total_dist - i - (j + 2)))
if saved >= need_save:
ans += 1
return ans