adventofcode2023/day04-1.py

from helpers import Helper

helper = Helper(debug=True)
load_input = helper.load_input
debug = helper.debug

class Card:
    """ A single scratch-off card for AOC 2023 day 4. """
    
    def __init__(self, input_line):
        card_id, numbers = input_line.split(": ")
        winning, have = numbers.split(" | ")
        
        self.idnum = card_id.split()[1]
        self.winning = [int(n) for n in winning.split()]
        self.have = [int(n) for n in have.split()]
    
    @property
    def num_winners(self) -> int:
        winners = 0
        for number in self.have:
            if number in self.winning:
                winners += 1
        
        return winners

    @property    
    def score(self) -> int:
        return 2**(self.num_winners-1) if self.num_winners > 0 else 0

def main():
    lines = load_input(4)
    cards = []
    
    for line in lines:
        cards.append(Card(input_line=line))
    
    total_score = 0
    for card in cards:
        total_score += card.score

    print(f"Total score: {total_score}")


if __name__ == "__main__":
    main()