Buggy python submission (verdict: Runtime Error):
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w))
    a[v-1].append((u-1,w))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])

Fixed submission:
import sys
sys.setrecursionlimit(10**7)
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w))
    a[v-1].append((u-1,w))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])

Buggy python submission (verdict: Runtime Error):
N = int(input())
graph = [[] for _ in range(N)]

for i in range(N-1):
    u, v, w = map(int, input().split())
    graph[u-1].append((v-1, w))
    graph[v-1].append((u-1, w))
# これによって木が定義できた
# print(graph)

flag = [None for _ in range(N)]  # まだどの頂点も探索していない


def k(v, distance):  # distanceは0or1
    flag[v] = distance  # 最初は0

    for next_v, w in graph[v]:
        if flag[next_v] == 1 or flag[next_v] == 0:  # 到達済み（親）であればcontinue
            continue
        if (w % 2) == 0:  # そのノードへの距離が偶数であればそのまま（最初は0なので）
            k(next_v, distance)
        else:
            k(next_v, 1-distance)


k(0, 0)  # 親を強制的に決めてよい, この場合は0のノードを親にしている
for i in range(N):
    print(int(flag[i]))


Fixed submission:
import sys
sys.setrecursionlimit(10**7)
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w))
    a[v-1].append((u-1,w))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])

Buggy python submission (verdict: Runtime Error):
def k(v, distance):  # distanceは0or1
    flag[v] = distance  # 最初は0

    for next_v, w in graph[v]:
        if flag[next_v] == 1 or flag[next_v] == 0:  # 到達済み（親）であればcontinue
            continue
        if w % 2 == 0:  # そのノードへの距離が偶数であればそのまま（最初は0なので）
            k(next_v, distance)
        else:
            k(next_v, 1-distance)


N = int(input())
graph = [[] for _ in range(N)]

for i in range(N-1):
    u, v, w = map(int, input().split())
    graph[u-1].append([v-1, w])
    graph[v-1].append([u-1, w])
# これによって木が定義できた
# print(graph)

flag = [None for _ in range(N)]  # まだどの頂点も探索していない

k(0, 0)  # 親を強制的に決めてよい, この場合は0のノードを親にしている
for i in range(N):
    print(int(flag[i]))


Fixed submission:
import sys
sys.setrecursionlimit(10**7)
n=int(input())
a=[[] for i in range(n)]
for i in range(n-1):
    u,v,w=map(int,input().split())
    a[u-1].append((v-1,w))
    a[v-1].append((u-1,w))
b=[None for i in range(n)]
def k(v,dis):
    b[v]=dis
    for next_v,w in a[v]:
        if b[next_v]!=None:
            continue
        if w%2==0:
            k(next_v,dis)
        else:
            k(next_v,1-dis)
k(0,0)
for i in range(n):
    print(b[i])