PQ1.push(start+'->'+v.get_id(), g.get_vertex('lafayette').distance1(v))
		if a==1:	
			GBFS1(g, stop, PQ1, route, rslt)
	return 0

if __name__ == '__main__':
	g = Graph()
	PQ=PriorityQueue()
	results=[]
	route={}
	f=open('input.txt', 'r')
	f.readline()
	k=f.readline()
	while (k!= 'Edges:\n'):
		p=k.split(', ')
		g.add_vertex(p[0], p[1], p[2])
		k=f.readline()
	while(k !=None):
		if(k==''):
			break
		elif(k!= 'Edges:\n'):
			p=k.split(', ')
			g.add_edge(p[0], p[1], int(p[2]))
			k=f.readline()
		else:
			k=f.readline()
			continue

	PQ.push('houston', 0)
	g.get_vertex('houston').visited='yes'
	route['houston']=0
			DFS(vetc[x], stop, stk, path, distance)
		if stk.isEmpty()!=True:
			stk.pop()
	return 0

if __name__ == '__main__':
	g = Graph()
	distance=0
	stack= Stack()
	path=[]
	f=open('input.txt', 'r')
	f.readline()
	k=f.readline()
	p=k.split(', ')
	for name in p:
		g.add_vertex(name)
		print name
	k=f.readline()
	while(k !=None):
		if(k==''):
			break

		elif(k!= 'Edges:\n'):
			p=k.split(', ')
			g.add_edge(p[0], p[1], int(p[2]))
			k=f.readline()
		else:
			k=f.readline()
			continue
	stack.push(g.get_vertex('houston'))
	g.get_vertex('houston').visited='yes'