結果

問題 No.265 数学のテスト
コンテスト
ユーザー yuruhiya
提出日時 2021-07-03 16:12:00
言語 Crystal
(1.14.0)
結果
RE  
実行時間 -
コード長 3,416 bytes
コンパイル時間 14,902 ms
コンパイル使用メモリ 296,472 KB
実行使用メモリ 6,948 KB
最終ジャッジ日時 2024-06-30 08:23:43
合計ジャッジ時間 12,936 ms
ジャッジサーバーID
（参考情報） 		judge4 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 31 RE * 1
権限があれば一括ダウンロードができます

ソースコード

diff # 

# require "/Scanner"
require "io/error"

class Scanner
  private def self.skip_to_not_space
    peek = STDIN.peek
    not_space = peek.index { |x| x != 32 && x != 10 } || peek.size
    STDIN.skip(not_space)
  end

  def self.s
    skip_to_not_space

    peek = STDIN.peek
    if index = peek.index { |x| x == 32 || x == 10 }
      STDIN.skip(index + 1)
      return String.new(peek[0, index])
    end

    String.build do |buffer|
      loop do
        buffer.write peek
        STDIN.skip(peek.size)
        peek = STDIN.peek
        break if peek.empty?
        if index = peek.index { |x| x == 32 || x == 10 }
          buffer.write peek[0, index]
          STDIN.skip(index)
          break
        end
      end
    end
  end
end

macro input_array(type, args)
  Array.new({{args.first}}) do
    {% if args.size == 1 %}
      input({{type.id}})
    {% else %}
      input_array({{type}}, {{args[1...args.size]}})
    {% end %}
  end
end

macro input(type)
  {% if type.is_a?(Path) %}
    {{type}}.new(Scanner.s)
  {% elsif type.is_a?(Var) || (type.is_a?(Call) && type.args.size == 0) %}
    {% if Scanner.methods.includes?(type.id) %}
      Scanner.{{type.id}}
    {% else %}
      Scanner.s.to_{{type.id}}
    {% end %}
  {% elsif type.name == "[]" %}
    input_array("{{type.receiver}}", {{type.args}})
  {% else %}
    input_array("{{type.name}}", {{type.args}})
  {% end %}
end

macro input(*types)
  {
    {% for type in types %}
      input({{type}}),
    {% end %}
  }
end

class Polynomial
  getter a : Array(Int32)

  def initialize(d : Int)
    @a = Array.new(d, 0)
  end

  def initialize(@a)
  end

  delegate size, to: @a
  delegate :[], to: @a
  delegate :[]=, to: @a

  def d
    Polynomial.new @a[1..].map_with_index(1) { |x, i| x * i } + [0]
  end

  def x
    Polynomial.new [0] + @a[..-2]
  end

  def +(other : self)
    Polynomial.new @a.zip(other.@a).map { |x, y| x + y }
  end

  def *(val : Int32)
    Polynomial.new @a.map { |x| x * val }
  end

  def to_s(io)
    io << @a
  end

  def inspect(io)
    io << @a
  end
end

class Solve
  getter n : Int32, d : Int32, s : Array(Char), hash : Hash(Int32, Int32)

  def initialize
    @n, @d = input(i, i)
    @d += 1
    @s = input(s).chars

    @hash = Hash(Int32, Int32).new
    stack = Deque(Int32).new
    s.each_with_index do |c, i|
      if c == '{'
        stack << i
      elsif c == '}'
        start = stack.pop
        hash[start + 1] = i - 1
      end
    end
  end

  def detect(pos : Int32)
    case s[pos]
    when 'd'
      end_pos = hash[pos + 2]
      {solve(pos + 2..end_pos).d, end_pos + 2}
    when 'x'
      res = Polynomial.new(d)
      res[1] = 1
      {res, pos + 1}
    when '1'..'9'
      res = Polynomial.new(d)
      res[0] = s[pos].to_i
      {res, pos + 1}
    else
      raise "a"
    end
  end

  def solve(range : Range = 0..n - 1)
    first, pos = detect(range.begin)
    stack = Deque{first}
    while pos < range.end
      case s[pos]
      when '*'
        pos += 1
        case s[pos]
        when 'x'
          now = stack.pop
          stack.push now.x
        when '1'..'9'
          now = stack.pop
          stack.push now * s[pos].to_i
        else
          raise "b"
        end
        pos += 1
      when '+'
        now, pos = detect(pos + 1)
        stack << now
      else
        raise "c"
      end
    end
    stack.reduce { |x, y| x + y }
  end
end

puts Solve.new.solve.a.join(' ')
0