blob: 8e2f8e7860b41512bd3b6e89931daaddc3cd31e8 (
plain)
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
|
from typing import Generator
safe = unsafe = 0
def is_safe_with_dampening(report: str) -> bool:
numbers = [int(elem) for elem in report.split()]
for ii in range(len(numbers)):
if is_safe((elem for idx, elem in enumerate(numbers) if idx != ii)):
return True
return False
def is_safe(numbers: Generator[int, None, None]) -> bool:
last_num = 0
increase = True
for ii, num in enumerate(numbers):
if ii != 0:
if ii == 1:
increase = num > last_num
if (num > last_num) != increase:
return False
diff = abs(num - last_num)
if diff < 1 or diff > 3:
return False
last_num = num
return True
with open("input") as f:
for report in f.readlines():
if is_safe_with_dampening(report):
safe += 1
else:
unsafe += 1
print(f"safe: {safe}\nunsafe: {unsafe}")
|