68 lines
1.3 KiB
Python
68 lines
1.3 KiB
Python
import shared
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import matrix
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from collections import Counter
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import numpy as np
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size = 75
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def pt2(dirs):
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r = size
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c = size
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mx = np.array(matrix.matrix_of_size(r*2+1,c*2+1))
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mx[r][c] = '2' # initial house
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for d in dirs[::2]:
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mx,r,c = move(mx, r, c, d)
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r=size
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c=size
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for d in dirs[1::2]:
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mx,r,c = move(mx, r, c, d)
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matrix.pmx(mx,pad=False,space=False)
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count(mx)
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def pt1(dirs):
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r = size
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c = size
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mx = np.array(matrix.matrix_of_size(r*2+1,c*2+1))
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mx[r][c] = '1' # initial house
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for d in dirs:
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mx,r,c = move(mx, r, c, d)
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matrix.pmx(mx,pad=False,space=False)
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count(mx)
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def move(mx, r, c, d):
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h, w = mx.shape
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d_r = 0
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d_c = 0
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match d:
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case '<':
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d_c = -1
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case '>':
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d_c = 1
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case '^':
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d_r = -1
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case 'v':
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d_r = 1
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c += d_c
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r += d_r
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mx[r][c] += 1
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return mx,r,c
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def add_pad(mx, d):
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return np.pad(mx, d, mode='constant', constant_values=0)
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def count(mx):
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flat = np.ravel(mx).tolist()
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total = len([x for x in flat if x])
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print(total)
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def main():
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with open(shared.get_fname(3), "r") as f:
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inp = [x for x in f.read().rstrip()]
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pt1(inp)
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pt2(inp)
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if __name__ == "__main__":
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main()
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