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More loops to numpy

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Bert Peters
2024-12-22 12:15:11 +01:00
parent 230b4ae028
commit 321d78d850
1 changed files with 5 additions and 8 deletions
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13
2024/src/aoc/days/day22.py
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@@ -41,14 +41,11 @@ class DayRunner(SeparateRunner):
per_signal = defaultdict(int)
for row_scores, row_deltas in zip(field, delta):
seen = set()
unique, positions = numpy.unique(
sliding_window_view(row_deltas, 4), return_index=True, axis=0
)
for window, price in zip(
sliding_window_view(row_deltas, 4), row_scores[4:]
):
key = tuple(window)
if key not in seen:
seen.add(key)
per_signal[key] += price
for key, index in zip(unique, positions):
per_signal[tuple(key)] += row_scores[index + 4]
return max(per_signal.values())