105 lines
2.8 KiB
Python
105 lines
2.8 KiB
Python
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"""
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--- Part Two ---
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The Elf finishes helping with the tent and sneaks back over to you.
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"Anyway, the second column says how the round needs to end: X means you
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need to lose, Y means you need to end the round in a draw, and Z means
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you need to win. Good luck!"
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The total score is still calculated in the same way, but now you need to
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figure out what shape to choose so the round ends as indicated. The
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example above now goes like this:
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- In the first round, your opponent will choose Rock (A), and you need
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the round to end in a draw (Y), so you also choose Rock. This gives
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you a score of 1 + 3 = 4.
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- In the second round, your opponent will choose Paper (B), and you
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choose Rock so you lose (X) with a score of 1 + 0 = 1.
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- In the third round, you will defeat your opponent's Scissors with
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Rock for a score of 1 + 6 = 7.
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Now that you're correctly decrypting the ultra top secret strategy
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guide, you would get a total score of 12.
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Following the Elf's instructions for the second column, what would your
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total score be if everything goes exactly according to your strategy
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guide?
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"""
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OPPONENT_ROCK = "A"
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OPPONENT_PAPER = "B"
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OPPONENT_SCISSORS = "C"
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LOSS = 0
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DRAW = 1
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WIN = 2
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YOU_ROCK = "X"
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YOU_PAPER = "Y"
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YOU_SCISSORS = "Z"
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POINTS = {
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YOU_ROCK: 1,
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YOU_PAPER: 2,
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YOU_SCISSORS: 3
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}
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LOSS_POINTS = 0
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DRAW_POINTS = 3
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WIN_POINTS = 6
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RESULTS = {
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f"{OPPONENT_ROCK}{YOU_ROCK}": DRAW,
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f"{OPPONENT_ROCK}{YOU_PAPER}": WIN,
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f"{OPPONENT_ROCK}{YOU_SCISSORS}": LOSS,
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f"{OPPONENT_PAPER}{YOU_ROCK}": LOSS,
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f"{OPPONENT_PAPER}{YOU_PAPER}": DRAW,
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f"{OPPONENT_PAPER}{YOU_SCISSORS}": WIN,
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f"{OPPONENT_SCISSORS}{YOU_ROCK}": WIN,
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f"{OPPONENT_SCISSORS}{YOU_PAPER}": LOSS,
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f"{OPPONENT_SCISSORS}{YOU_SCISSORS}": DRAW,
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}
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REQUIRED_ACTIONS = {
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"X": LOSS,
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"Y": DRAW,
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"Z": WIN,
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}
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DESIRED_RESULTS = {
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f"{OPPONENT_ROCK}X": YOU_SCISSORS,
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f"{OPPONENT_ROCK}Y": YOU_ROCK,
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f"{OPPONENT_ROCK}Z": YOU_PAPER,
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f"{OPPONENT_PAPER}X": YOU_ROCK,
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f"{OPPONENT_PAPER}Y": YOU_PAPER,
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f"{OPPONENT_PAPER}Z": YOU_SCISSORS,
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f"{OPPONENT_SCISSORS}X": YOU_PAPER,
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f"{OPPONENT_SCISSORS}Y": YOU_SCISSORS,
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f"{OPPONENT_SCISSORS}Z": YOU_ROCK,
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}
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def main():
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points = 0
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with open("input.txt", "r", encoding="utf-8") as f:
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for line in f:
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if not line.strip():
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continue
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opponent, desired_result = line.strip().split()
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result = REQUIRED_ACTIONS[desired_result]
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if result == DRAW:
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points += DRAW_POINTS
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elif result == WIN:
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points += WIN_POINTS
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my_action = DESIRED_RESULTS[f"{opponent}{desired_result}"]
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points += POINTS[my_action]
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print(f"Using the complete strategy guide, my score will be {points}")
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if __name__ == "__main__":
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main()
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