35 lines
771 B
Python
Executable File
35 lines
771 B
Python
Executable File
#!/usr/bin/python3
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slope = []
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with open("input") as fh:
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for ln in fh:
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row = []
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for c in ln:
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if c == "#":
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row.append(True)
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elif c == ".":
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row.append(False)
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elif c == "\n":
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pass
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else:
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raise RuntimeError("impossible")
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slope.append(row)
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def trees(slope, right, down):
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xmod = len(slope[0])
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x = 0
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y = 0
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trees = 0
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while y < len(slope):
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trees += slope[y][x % xmod]
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x += right
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y += down
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print(right, down, trees)
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return trees
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t1 = (trees(slope, 1, 1))
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t2 = (trees(slope, 3, 1))
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t3 = (trees(slope, 5, 1))
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t4 = (trees(slope, 7, 1))
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t5 = (trees(slope, 1, 2))
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print(t1 * t2 * t3 * t4 * t5)
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