from collections import Counter from utils import open_day 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.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))))