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48 lines
1.1 KiB
Python
48 lines
1.1 KiB
Python
from math import sqrt, floor, ceil
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def do_task(input):
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lines = input.split("\n")
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time = int("".join(lines[0].split()[1:]))
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distance = int("".join(lines[1].split()[1:]))
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a = -1
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b = time
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c = -distance
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max_h = (-b - sqrt(b**2 - 4 * a * c)) / (2 * a)
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min_h = (-b + sqrt(b**2 - 4 * a * c)) / (2 * a) + 1
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return ceil(max_h) - floor(min_h)
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# Kind of slow, but workable
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def do_task_the_dumb_way(input):
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lines = input.split("\n")
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time = int("".join(lines[0].split()[1:]))
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distance = int("".join(lines[1].split()[1:]))
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ways = 0
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for h in range(time):
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d = (time - h) * h
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# This is how dumb you have to make it to make it run slow
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# for t in range(time - h):
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# d+=h
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if d > distance:
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ways += 1
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return ways
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with open("day06/data/input100.txt") as infile:
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result = do_task(infile.read())
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print(result)
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print(result == 71503)
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with open("day06/data/input101.txt") as infile:
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result = do_task(infile.read())
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print(result)
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print(result == 42948149)
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