aoc-2021/day_4/code.py
2021-12-05 16:52:20 +01:00

87 lines
No EOL
2 KiB
Python

import fileinput
import pprint
data = []
for inp in fileinput.input():
val = inp.strip()
if val == '':
data.append(None)
if val != '':
data.append(val)
# parse called numbers
to_be_called = list(map(int, data[0].strip().split(',')))
# parse boards
boards = []
currentBoard = []
for line in data[2:]:
if line == None:
boards.append(currentBoard)
currentBoard = []
continue
line_tmp = filter(lambda x: x != '', line.split(' '))
line_tmp = map(int, line_tmp)
currentBoard.append(list(line_tmp))
def is_row_valid(row, called):
to_cmp = list(map(lambda x: x in called, row))
return to_cmp == len(row)*[True]
def board_do_win(deb, board, calling):
for row in board:
if is_row_valid(row, calling):
return True
# generate columns
columns = []
for column_index in range(len(board[0])):
current_c = []
for row_index in range(len(board)):
current_c.append(board[row_index][column_index])
columns.append(current_c)
# if deb:
# print(f'{columns=}')
for column in columns:
if is_row_valid(column, calling):
return True
return False
def get_wins():
wins = []
index_to_wins = []
for i in range(len(to_be_called)):
calling = to_be_called[0:(i+1)]
for board_index,board in enumerate(boards):
if board_index in index_to_wins:
continue
deb = False
if calling == [7, 4, 9, 5, 11, 17, 23, 2, 0, 14, 21, 24, 10, 16, 13]:
print('DEBUG==')
deb = True
res = board_do_win(deb, board, calling)
if deb:
print(res, board)
if res:
wins.append((board_index, calling.copy(), board))
index_to_wins.append(board_index)
return wins, index_to_wins
def get_score_from_board(board, calling):
sum_unmarked = 0
for row in board:
for e in row:
if e not in calling:
sum_unmarked += e
return sum_unmarked * calling[-1]
score = 0
wins, index_to_wins = get_wins()
pprint.pprint(wins)
print(f'{index_to_wins=}')
i, calling, winner = wins[-1]
score = get_score_from_board(winner, calling)
pprint.pprint(winner)
print(f'{score=}')