2024-12-13 05:09:33 -05:00
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import math
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import re
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text: str
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with open("input.txt") as f:
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text = f.read()
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total: int = 0
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exp: str = r"Button A: X([+-]\d+), Y([+-]\d+)\nButton B: X([+-]\d+), Y([+-]\d+)\nPrize: X=(\d+). Y=(\d+)"
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def resolv(Ax, Ay, Bx, By, goal_x, goal_y):
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for press_b in range(101):
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press_a = (goal_x - (press_b * Bx)) / Ax
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2024-12-13 05:12:23 -05:00
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if press_a * Ay + press_b * By != goal_y:
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2024-12-13 05:09:33 -05:00
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continue
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if (press_a // 1 != press_a):
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continue
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if (press_a > 100):
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continue
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return press_a, press_b
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def resolv_min(Ax, Ay, Bx, By, goal_x, goal_y):
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tmp1 = resolv(Ax, Ay, Bx, By, goal_x, goal_y)
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tmp2 = resolv(Bx, By, Ax, Ay, goal_x, goal_y)
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if (tmp1 is None):
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return tmp2
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if (tmp2 is None):
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return tmp1
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press_a1, press_b1 = tmp1
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press_b2, press_a2 = tmp2
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if (press_a1 > press_a2):
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return press_a2, press_b2
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return press_a1, press_b1
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for Ax, Ay, Bx, By, goal_x, goal_y in re.findall(exp, text):
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Ax, Ay, Bx, By, goal_x, goal_y = int(Ax), int(Ay), int(Bx), int(By), int(goal_x), int(goal_y)
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tmp = resolv_min(Ax, Ay, Bx, By, goal_x, goal_y)
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if (tmp is None):
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continue
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press_a, press_b = tmp
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total += press_a * 3 + press_b
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print(total)
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