1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
#!/usr/bin/env python3
from functools import reduce
from re import findall
from copy import deepcopy
import sys
# import numpy as np
filename = sys.argv[1] if len(sys.argv) == 2 \
else "in/" + sys.argv[0].split('/')[-1].rstrip(".py") + ".pzl"
data = open(filename).read()
lines = data.rstrip('\n').split('\n')
res1 = 0
res2 = 0
D = dict()
for x,line in enumerate(lines):
for y, c in enumerate(line):
D[(x,y)] = c
def solve(D, remove=False):
r = 0
for (x, y), c in D.items():
if c != '@':
continue
n = 0
for dx, dy in [(1, -1), (1, 0), (1, 1), (-1, -1),
(-1, 0), (-1, 1), (0, -1), (0, 1)]:
d = (x + dx, y + dy)
if d in D and D[d] == '@':
n += 1
if n < 4:
r += 1
if remove == True:
D[(x, y)] = '.'
return r
res1 = solve(D)
while (r := solve(D, remove=True)) > 0:
res2 += r
print('res1:', res1)
print('res2:', res2)
|
