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Diffstat (limited to '6np.py')
| -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)))) |