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
46
47
48
49
|
# pyright: strict
from functools import cache
from sys import stdin
@cache
def match(arrangement: str, pattern: str) -> bool:
if len(arrangement) != len(pattern):
return False
for a, p in zip(arrangement, pattern):
if p == "?":
continue
if a != p:
return False
return True
@cache
def matching(
pattern: str, groups: tuple[int, ...], length: int, min_offset: int = 0
) -> int:
if not groups:
return 1 if "#" not in pattern else 0
block = "#" * groups[0]
total = 0
for offset in range(min_offset, length - sum(groups) - len(groups) + 2):
prefix_len = offset + groups[0]
if not match("." * offset + block, pattern[:prefix_len]):
continue
total += matching(
pattern[prefix_len:], groups[1:], length - prefix_len, min_offset=1
)
return total
inp: list[tuple[str, tuple[int, ...]]] = []
for line in stdin:
pattern, rest = line.rstrip().split(maxsplit=1)
groups = tuple(map(int, rest.split(",")))
inp.append((pattern, groups))
print(sum(matching(pattern, groups, len(pattern)) for pattern, groups in inp))
print(
sum(
matching("?".join([pattern] * 5), groups * 5, len(pattern) * 5 + 4)
for pattern, groups in inp
)
)
|
