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@@ -0,0 +1,16 @@
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1
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+with open('data/17.txt', 'r') as file:
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+ steps = int(file.readline().strip())
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+ buffer = []
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+ position = 0
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+ for i in range(2018):
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+ buffer.insert(position, i)
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+ position = (position + steps + 1) % (i + 1)
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+ print(f'Part one: {buffer[(buffer.index(2017) + 1) % len(buffer)]}')
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+
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+ # The entry for zero is always at the end of our buffer, as we never call insert beyond the length of the list,
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+ # so the entry after zero is always the one at position 0.
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+ for i in range(2018, 50000001):
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+ if position == 0:
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+ after_zero = i
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+ position = (position + steps + 1) % (i + 1)
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16
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+ print(f'Part two: {after_zero}')
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