44 lines
1.0 KiB
Python
44 lines
1.0 KiB
Python
import fileinput
|
|
from collections import defaultdict
|
|
from pprint import pprint
|
|
|
|
cwd: list[str] = []
|
|
folders: defaultdict[tuple[str, ...], int] = defaultdict(int)
|
|
subdirs: defaultdict[tuple[str, ...], list[str]] = defaultdict(list)
|
|
|
|
for line in fileinput.input():
|
|
s = line.split()
|
|
|
|
if s[0] == "$":
|
|
if s[1] == "cd":
|
|
if s[2] == "..":
|
|
cwd.pop()
|
|
elif s[2] == "/":
|
|
cwd.clear()
|
|
else:
|
|
cwd.append(s[2])
|
|
else:
|
|
if s[0].isdigit():
|
|
folders[tuple(cwd)] += int(s[0])
|
|
elif s[0] == "dir":
|
|
subdirs[tuple(cwd)].append(s[1])
|
|
|
|
|
|
def recur(path: tuple[str, ...]) -> int:
|
|
# size = folders[path]
|
|
for subdir in subdirs[path]:
|
|
folders[path] += recur(path + (subdir,))
|
|
return folders[path]
|
|
|
|
|
|
recur(())
|
|
pprint(folders)
|
|
|
|
part1 = sum(x for x in folders.values() if x <= 100_000)
|
|
print(part1)
|
|
|
|
used = folders[()]
|
|
free = 70_000_000 - used
|
|
need_freed = 30_000_000 - free
|
|
print(min(x for x in folders.values() if x > 30_000_000 - free))
|