Problem p03044 (python)

Fixed submission:
class Graph():
	def __init__(self):
		self.adjacency_dict = {}
		self.weight = []

	def add_vartex(self, v):
		self.adjacency_dict[v] = []
		self.weight.append([])

	def add_edge(self, v1, v2, w):
		self.adjacency_dict[v1].append(v2)
		self.adjacency_dict[v2].append(v1)
		self.weight[v1].append(w)
		self.weight[v2].append(w)

	def get_vartexes(self):
		return self.adjacency_dict.keys()

	def get_edges(self, v):
		return self.adjacency_dict[v], self.weight[v]

	def printgraph(self):
		return print(self.adjacency_dict)

n = int(input())

res = []
g = Graph()
for i in range(n):
	res.append(-1)
	g.add_vartex(i)

for i in range(n-1):
	u, v, w = map(int, input().strip().split())
	g.add_edge(u - 1, v - 1, w % 2)


q = []
res[0] = 0
q.append(0)
while(len(q) > 0):
	v = q.pop()
	u_l, w_l = g.get_edges(v)
	for u, w in zip(u_l, w_l):
		if res[u] != -1:
			continue
		res[u] = (res[v] + w) % 2
		q.append(u)

for i in range(n):
	print(res[i])

Buggy submission (verdict: Runtime Error):
class Graph():
	def __init__(self):
		self.adjacency_dict = {}
		self.weight = []

	def add_vartex(self, v):
		self.adjacency_dict[v] = []
		self.weight.append([])

	def add_edge(self, v1, v2, w):
		self.adjacency_dict[v1].append(v2)
		self.adjacency_dict[v2].append(v1)
		self.weight[v1].append(w)
		self.weight[v2].append(w)

	def get_vartexes(self):
		return self.adjacency_dict.keys()

	def get_edges(self, v):
		return self.adjacency_dict[v], self.weight[v]

	def printgraph(self):
		return print(self.adjacency_dict)

n = int(input())

res = []
g = Graph()
for i in range(n):
	res.appned(-1)
	g.add_vartex(i)

for i in range(n-1):
	u, v, w = map(int, input().strip().split())
	g.add_edge(u - 1, v - 1, w % 2)


q = []
res[0] = 0
q.append(0)
while(len(q) > 0):
	v = q.pop()
	u_l, w_l = get_edges(v)
	for u, w in zip(u_l, w_l):
		if res[u] != -1:
			continue
		res[u] = (res[v] + w) % 2
		q.appned(u)

for i in range(n):
	print(res[i])

Buggy submission (verdict: Runtime Error):
class Graph():
	def __init__(self):
		self.adjacency_dict = {}
		self.weight = []

	def add_vartex(self, v):
		self.adjacency_dict[v] = []
		self.weight.append([])

	def add_edge(self, v1, v2, w):
		self.adjacency_dict[v1].append(v2)
		self.adjacency_dict[v2].append(v1)
		self.weight[v1].append(w)
		self.weight[v2].append(w)

	def get_vartexes(self):
		return self.adjacency_dict.keys()

    def get_edges(self, v):
        return self.adjacency_dict[v], self.weight[v]

    def printgraph(self):
    	return print(self.adjacency_dict)

n = int(input())

res = []
g = Graph()
for i in range(n):
	res.appned(-1)
	g.add_vartex(i)

for i in range(n-1):
	u, v, w = map(int, input().strip().split())
	g.add_edge(u - 1, v - 1, w % 2)


q = []
res[0] = 0
q.append(0)
while(len(q) > 0):
	v = q.pop()
	u_l, w_l = get_edges(v)
	for u, w = in zip(u_l, w_l):
		if res[u] != -1:
			continue
		res[u] = (res[v] + w) % 2
		q.appned(u)

for i in range(n):
	print(res[i])

Buggy submission (verdict: Runtime Error):
class Graph():
	def __init__(self):
		self.adjacency_dict = {}
		self.weight = []

	def add_vartex(self, v):
		self.adjacency_dict[v] = []
		self.weight.append([])

	def add_edge(self, v1, v2, w):
		self.adjacency_dict[v1].append(v2)
		self.adjacency_dict[v2].append(v1)
		self.weight[v1].append(w)
		self.weight[v2].append(w)

	def get_vartexes(self):
		return self.adjacency_dict.keys()

    def get_edges(self, v):
        return self.adjacency_dict[v], self.weight[v]

    def printgraph(self):
    	return print(self.adjacency_dict)

n = int(input())

res = []
g = Graph()
for i in range(n):
	res.appned(-1)
	g.add_vartex(i)

for i in range(n-1):
	u, v, w = map(int, input().strip().split())
	g.add_edge(u - 1, v - 1, w % 2)


q = []
res[0] = 0
q.append(0)
while(len(q) > 0):
	v = q.pop()
	u_l, w_l = get_edges(v)
	for u, w = in zip(u_l, w_l):
		if res[u] != -1:
			continue
		res[u] = (res[v] + w) % 2
		q.appned(u)

for i in range(n):
	print(res[i])