class Yukicoder
  def initialize
    n = gets.chomp.to_i
    w = gets.chomp.split(' ').map(&:to_i).sort
    n = gets.chomp.to_i
    b = gets.chomp.split(' ').map(&:to_i).sort

    dw = w.dup
    db = b.dup
    listA = []
    listB = []
    number = 0

    while w.any? || b.any?
      if listA.size.even?
        if w.first.to_i > number
          number = w.shift
          listA << number
        elsif w.empty?
          break;
        else
          w.shift
        end
      else
        if b.first.to_i > number
          number = b.shift
          listA << number
        elsif b.empty?
          break
        else
          b.shift
        end
      end
    end

    number = 0

    while dw.any? || db.any?
      if listB.size.odd?
        if dw.first.to_i > number
          number = dw.shift
          listB << number
        elsif dw.empty?
          break;
        else
          dw.shift
        end
      else
        if db.first.to_i > number
          number = db.shift
          listB << number
        elsif db.empty?
          break
        else
          db.shift
        end
      end
    end

    puts [listA.size, listB.size].max
  end
end

Yukicoder.new