class sdict:
  "Special dictionary"
  d = {}
  a = []
  def __init__(self, args):
      self.d={}
      self.a=[]
      for i in args:
        key,value=list(i.items())[0]
        self.a.append(key)
        self.d[key]=value
  def keys(self):
      return self.a
  def values(self):
      r=[]
      for key in self.a:
        r.append(self.d[key])
      return r
  def get(self,key):
      return self.d[key]
  def __getitem__(self, item):
      return self.a.__getitem__(item)
  def __setitem__(self, item, value):
      self.a.__setitem__(item, value)