require "letters"

class Sue
  MATCHERS = Hash.new("==")
  %w[ cats trees ].each do |key|
    MATCHERS[key] = ?>
  end
  %w[pomeranians goldfish ].each do |key|
    MATCHERS[key] = ?<
  end

  attr_reader *%i[ properties ]

  def initialize(properties)
    @properties = properties
  end

  def match?(facts)
    facts.select {|k,_| properties.keys.include?(k) }
         .all? {|k,v| properties[k].send(MATCHERS[k], v) }
  end
end

regex = /Sue (\d+): (.*)/
sues = Hash[DATA.read.scan(regex).map { |attrs|
  [attrs[0].to_i, Sue.new(Hash[attrs[1].split(", ")
                                       .map {|i| i.split(": ") }
                                       .map {|k,v| [k,v.to_i] }])]
}]
facts = Hash[<<FACTS.split("\n").map {|i| i.split(": ") }.map {|k,v| [k,v.to_i] }]
children: 3
cats: 7
samoyeds: 2
pomeranians: 3
akitas: 0
vizslas: 0
goldfish: 5
trees: 3
cars: 2
perfumes: 1
FACTS

puts sues.select {|i,sue| sue.match?(facts) }

__END__