lib C
  fun strtoll(s : UInt8*, p : UInt8**, b : Int32) : Int64
end

class String
  def to_i64
    C.strtoll(self, nil, 10)
  end
end

a = read_line.split.map(&.to_i)
b = read_line.split.map(&.to_i)

if a.sort == b.sort
  if a == b
    puts "Yes"
  else
    puts "Yes"
    puts 2
  end
else
  puts "No"
end