55 lines
936 B
Python
55 lines
936 B
Python
from lib import *
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input = read_input(2017, 10).strip()
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nums = [*range(256)]
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pos = 0
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skip = 0
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def rev(a, b):
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a %= len(nums)
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b = (b - a) % len(nums)
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nums[:] = nums[a:] + nums[:a]
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nums[:b] = nums[:b][::-1]
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nums[:] = nums[-a:] + nums[:-a]
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for length in map(int, input.split(",")):
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rev(pos, pos + length)
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pos += length + skip
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skip += 1
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print(nums[0] * nums[1])
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lengths = [*map(ord, input), 17, 31, 73, 47, 23]
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nums = [*range(256)]
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pos = 0
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skip = 0
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def rev(a, b):
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a %= len(nums)
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b = (b - a) % len(nums)
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nums[:] = nums[a:] + nums[:a]
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nums[:b] = nums[:b][::-1]
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nums[:] = nums[-a:] + nums[:-a]
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for _ in range(64):
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for length in lengths:
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rev(pos, pos + length)
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pos += length + skip
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skip += 1
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dense = []
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for i in range(16):
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x = 0
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for j in range(16):
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x ^= nums[i * 16 + j]
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dense.append(x)
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print("".join(f"{x:02x}" for x in dense))
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