29 lines
770 B
Python
29 lines
770 B
Python
with open("input17.txt") as f:
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line = f.read().rstrip()
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(xmin, xmax), (ymin, ymax) = (
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tuple(map(int, part.rstrip(",")[2:].split("..")))
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for part in line.split()[2:]
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)
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# highest y regardless of x will be the one using the velocity that immediately
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# goes to ymin after crossing the 0 axis...
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print(sum(range(abs(ymin + 1) + 1)))
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n = 0
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ivxmax = abs(xmax)
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ivymax = abs(xmax)
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for ivx in range(ivxmax, -1, -1):
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for ivy in range(ivymax, -ivymax - 1, -1):
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x, y = 0, 0
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vx, vy = ivx, ivy
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while x <= xmax and y >= ymin:
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x += vx
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y += vy
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if vx > 0:
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vx -= 1
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vy -= 1
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if xmin <= x <= xmax and ymin <= y <= ymax:
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n += 1
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break
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print(n)
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