def score(*args):
    """Get score of core-periphery pairs.
		
		Parameters
		----------
		G : Graph object. 
		c : Dict object,  the keys and values of which are the name of node and its ID of belonging core-periphery pair.  
		
		
		Returns
		-------
		q : List. q[i] is the quality of core-periphery pair i.  
			
		"""
    self = args[0]
    if len(args) == 1:
        return self.qs_
    else:
        G = args[1]
        c = args[2]
        x = args[3]
        return self._score(G, c, x)
