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| author | Tomasz Kramkowski <tk@the-tk.com> | 2021-12-06 09:07:29 +0000 |
|---|---|---|
| committer | Tomasz Kramkowski <tk@the-tk.com> | 2021-12-06 09:07:29 +0000 |
| commit | e400c1fab39d87c72f867007952ae3ef65823766 (patch) | |
| tree | 6f60d9e5011fdcffa0bc73bbcb4f40906346104c | |
| parent | f5448cb76e52586d1a0957ee6bd54bba2372b49e (diff) | |
| download | aoc2021-e400c1fab39d87c72f867007952ae3ef65823766.tar.gz aoc2021-e400c1fab39d87c72f867007952ae3ef65823766.tar.xz aoc2021-e400c1fab39d87c72f867007952ae3ef65823766.zip | |
day 6 numpy: shorter
| -rw-r--r-- | 6np.py | 13 |
1 files changed, 2 insertions, 11 deletions
@@ -4,17 +4,8 @@ import numpy as np fish = Counter(map(int, open_day(6).read().split(','))) fish = np.array([fish[i] for i in range(9)]) -mat = np.array([ - [0, 0, 0, 0, 0, 0, 1, 0, 1], - [1, 0, 0, 0, 0, 0, 0, 0, 0], - [0, 1, 0, 0, 0, 0, 0, 0, 0], - [0, 0, 1, 0, 0, 0, 0, 0, 0], - [0, 0, 0, 1, 0, 0, 0, 0, 0], - [0, 0, 0, 0, 1, 0, 0, 0, 0], - [0, 0, 0, 0, 0, 1, 0, 0, 0], - [0, 0, 0, 0, 0, 0, 1, 0, 0], - [0, 0, 0, 0, 0, 0, 0, 1, 0] -]) +mat = np.eye(9, 9, -1, dtype=int) +mat[0, [6, 8]] = 1 print(sum(np.matmul(fish, np.linalg.matrix_power(mat, 80)))) print(sum(np.matmul(fish, np.linalg.matrix_power(mat, 256)))) |