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Day 4 part 1

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kleph 2021-12-06 23:25:28 +01:00
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4/4.py Executable file
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#!/usr/bin/env python
# 2021 - Advent Of Code - 4
import re
re_parse = re.compile(r'\s?(\d+)\s+'*4 + r'(\d+)')
GRID_SIZE = 5
class Board:
def __init__(self, grid):
self.grid = grid
self.marked = [[0] * GRID_SIZE for _ in range(GRID_SIZE)]
def print_with_mark(self):
for x in range(GRID_SIZE):
print(f'{self.grid[x]} \t {self.marked[x]}')
def mark_number(self, num):
for line in range(GRID_SIZE):
try:
index = self.grid[line].index(num)
self.marked[line][index] = 1
if self.has_win():
return True
return False
except ValueError:
pass
return False
def has_win(self):
# check lines
for line in range(GRID_SIZE):
if 0 not in self.marked[line]:
return True
# check column
for c in range(GRID_SIZE):
col_sum = 0
for line in range(GRID_SIZE):
if self.marked[line][c] == 0:
break
else:
col_sum += 1
if col_sum == GRID_SIZE:
return True
return False
def calc_unmarked(self):
unmarked_sum = 0
for line in range(GRID_SIZE):
for col in range(GRID_SIZE):
if self.marked[line][col] == 0:
unmarked_sum += int(self.grid[line][col])
return unmarked_sum
def parse_file(file):
boards_list = []
with open(file) as f:
numbers = f.readline().split(',')
line = f.readline()
while line:
board = []
for i in range(GRID_SIZE):
line = f.readline()
m = re_parse.match(line)
grid_line = m.groups()
board.append(grid_line)
b = Board(board)
boards_list.append(b)
line = f.readline()
return boards_list, numbers
def play_until_win(boards_list, draws):
""" play until win and return last pos """
for d in draws:
for board in boards_list:
if board.mark_number(d):
print("this board wins !")
board.print_with_mark()
return board, d
boards, draws = parse_file('input.txt')
print(f'number of boards: {len(boards)}')
(winning_board, last_num) = play_until_win(boards, draws)
print(f'last number is: {last_num}')
board_score = winning_board.calc_unmarked()
print(f'board score: {board_score}')
score = int(last_num) * board_score
print(f'score is : {score}')

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4/input.txt Normal file
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72,99,88,8,59,61,96,92,2,70,1,32,18,10,95,33,20,31,66,43,26,24,91,44,11,15,48,90,27,29,14,68,3,50,69,74,54,4,16,55,64,12,73,80,58,83,6,87,30,41,25,39,93,60,9,81,63,75,46,19,78,51,21,28,94,7,17,42,53,13,97,98,34,76,89,23,86,52,79,85,67,84,47,22,37,65,71,49,82,40,77,36,62,0,56,45,57,38,35,5
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