You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.4 KiB
87 lines
2.4 KiB
10 months ago
|
import re
|
||
|
|
import argparse
|
||
|
|
def search(line, groups):
|
||
|
|
#print("searching {} for {}".format(line, groups))
|
||
|
|
#find the first ?
|
||
|
|
if not precheck(line, groups):
|
||
|
|
return
|
||
|
|
if check(line, groups):
|
||
|
|
#print("found a solutioN!")
|
||
|
|
yield line
|
||
|
|
return
|
||
|
|
|
||
|
|
if '?' not in line:
|
||
|
|
return
|
||
|
|
|
||
|
|
#print("delving into subtree {}".format(line.replace('?', '#', 1)))
|
||
|
|
yield from search(line.replace('?', "#", 1), groups)
|
||
|
|
yield from search(line.replace('?', ".", 1), groups)
|
||
|
|
|
||
|
|
def precheck(line, groups):
|
||
|
|
expected_hits = sum(groups)
|
||
|
|
if line.count('#') > expected_hits:
|
||
|
|
# if there are more hits in our candidate than the expected number, then this is a bad branch.
|
||
|
|
# return false to skip it.
|
||
|
|
#print("too many #")
|
||
|
|
return False
|
||
|
|
if line.count('.') > len(line) - expected_hits:
|
||
|
|
# if there are moroe confirmed empties in our candidate than len - expected_hits, then this is a bad branch.
|
||
|
|
# return false to skip it.
|
||
|
|
#print("too many .")
|
||
|
|
return False
|
||
|
|
return True
|
||
|
|
|
||
|
|
def check(line, groups):
|
||
|
|
if '?' in line:
|
||
|
|
return False
|
||
|
|
line_list = list(map(lambda x: len(x), line.replace(".", " ").split()))
|
||
|
|
if len(line_list) == len(groups):
|
||
|
|
return all(map(lambda x: x[0] == x[1], zip(line_list, groups)))
|
||
|
|
return False
|
||
|
|
return groups == line_list
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
parser = argparse.ArgumentParser()
|
||
|
|
parser.add_argument("filename", help="the file from which to take data")
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
with open(args.filename, "r") as f:
|
||
|
|
line_re = re.compile("([.?#]*) ([0-9,]*)")
|
||
|
|
s = 0
|
||
|
|
for l in f.readlines():
|
||
|
|
m = line_re.match(l)
|
||
|
|
line = m.group(1)
|
||
|
|
groups = list(map(int, m.group(2).split(',')))
|
||
|
|
#print("line is {} and groups are {}".format(line, groups))
|
||
|
|
#for option in search(line, groups):
|
||
|
|
# print(option)
|
||
|
|
|
||
|
|
x = len(list(search(line,groups)))
|
||
|
|
#print("there are {} solutinos".format(x))
|
||
|
|
s += x
|
||
|
|
print("the total solutionss are {}".format(s))
|
||
|
|
|
||
|
|
|
||
|
|
print("and noow for part b")
|
||
|
|
|
||
|
|
|
||
|
|
with open(args.filename, "r") as f:
|
||
|
|
line_re = re.compile("([.?#]*) ([0-9,]*)")
|
||
|
|
s = 0
|
||
|
|
for l in f.readlines():
|
||
|
|
m = line_re.match(l)
|
||
|
|
line = m.group(1)
|
||
|
|
line = line + "?" + line + "?" + line + "?" + line + "?" + line
|
||
|
|
groups = list(map(int, m.group(2).split(',')))
|
||
|
|
groups = groups * 5
|
||
|
|
print("line is {} and groups are {}".format(line, groups))
|
||
|
|
#for option in search(line, groups):
|
||
|
|
# print(option)
|
||
|
|
|
||
|
|
x = len(list(search(line,groups)))
|
||
|
|
print("there are {} solutinos".format(x))
|
||
|
|
s += x
|
||
|
|
print("the total solutionss are {}".format(s))
|