ParadoxV5

These notes references 睿国丨肥头’s Walkthrough. 这些笔记参考睿国丨肥头的攻略。 🙏

Strategies

策略

(Should I compose an English edition as well?)

此番学习参考了[燁魔的教学][燁魔]。🙏

她早已像我这么强。🪦 （也是，我还给她介绍了向导和学徒，说明她早已出师（不是四声）。）

无限火球、点燃、火妖、“水妖”（银樽）等哀绿法虽然自闭，但是不管过度再怎么顺滑，它们也依然有不低的门槛和技术天花板。操作者要在面临烧绳的鸭梨下考虑牌序（比如“奥术脑洞”刷夜能在复制了太多法强后穿进疲劳紫砂），技术含量比♾️🚪、♾️🧊多多了。

	VAMPIRES = ARGV.each_with_index.filter_map do\|input, idx\|
	number = Integer input
	length = input.length
	next if length.odd?

	fangs = input.chars.permutation(length).filter_map do\|digits\|
	digits2 = digits.pop(length/2)
	next if digits.last == '0' and digits2.last == '0' # This isn’t counted
	a = Integer digits .join, 10
	b = Integer digits2.join, 10

	# ### 问：大五码系列和ＧＢ系列的字节长度“兼容”吗？
	# 大五码系列用一或两个字节编码一个字符，而最新的 GB 18030 用一、二或四个。
	# * 大五和ＧＢ的单字节范围都是 `00`–`7F`；大于这个范围的字节才表示多节的编码。
	# * GB 18030 特有的驷节编码通过 `30`–`39` 范围的第二节辨识；这个范围小于大五和ＧＢ的双节编码的第二节范围。
	# 排除上面后，大五码系列除了错误之外的双字节均对应ＧＢ系列的双字节————虽然有些大五范围超出了ＧＢ范围。

	puts ARGV.map { _1
	.encode(Encoding::Big5_HKSCS) # 大五码・香港增补字符集
	.force_encoding(Encoding::GB18030) # 信息技术　中文编码字符集（码位最多）
	}.join(' ').encode(Encoding.default_external)

	# frozen_string_literal: true

	# Goldberg–Tarjan Push–Relabel Algorithm
	# with FIFO active set and BFS pre-labeling
	# * https://www.adrian-haarbach.de/idp-graph-algorithms/implementation/maxflow-push-relabel/index_en.html
	# * https://en.wikipedia.org/wiki/Push%E2%80%93relabel_maximum_flow_algorithm?oldid=1230043247
	# variable names are in dummies’ terminologies
	class PushRelabel

	class Node

	def int2bytestr(int, bytesize = int.size)
	[
	# Format to hex, left-pad with `0` (big-endian) for `bytesize * 2` nibbles
	sprintf('%0X', bytesize 2, int)
	].pack 'H*' # Pack string of hex chars to string of raw bytes
	end

	# Demo
	print "actual\t"
	p int2bytestr(0x4_20_69_de_ad_be_ef_13_37, 10)

	# Marker module for “my library”
	module MyError end

	# Built-in exception class example
	ZeroDivisionError.include MyError
	puts begin
	1 / 0
	rescue MyError => e
	e
	end #=> divided by 0

	# frozen_string_literal: true

	class CellularAutomaton
	def initialize(grid)
	@grid = grid
	# Back Buffer
	@grid2 = grid.map(&:dup)
	@rules = yield self
	end
	def self.load(file, ...) = new(file.each_line(chomp: true).map(&:chars), ...)

	def answer1(n) = n.succ
	def answer2(str) = str.upcase
	def answer3(n) = (0..n).to_a
	def answer4 = yield + 42
	def answer5(a, b = 1) = a + b
	def answer6(n) = n.positive? ? (n - 1) % 9 + 1 : n
	def answer7(x) = x.succ
	def answer8(n) = n.digits(2).sum
	def answer9(s) = s.gsub 'u-g0t-me', 'yikes'
	def answer10(x = false) = @data10 = x ? 0 : @data10 ? @data10 + 1 : 1

	$* << [//=~'', /$/=~'$'] << () << ->() {
	$*[~(/$$/=~'$$')][
	( $*[~(/$/=~'$')] += (/$/=~'$') ) - (/$/=~'$')
	] \|\|= (
	$*[~(/$/=~'$')] -= (/$$/=~'$$')
	$[~(//=~'')][] + $[ ~(/$$/=~'$$') ][ $*[~(/$/=~'$')] - (/$$/=~'$$') ]
	)
	}

	# Test