Sadonkorjuu

#import math
#import numpy
import sys, math
#import datetime	
CityCount = int(input())
#start_time = datetime.datetime.now()
CityStates = input().split()
RoadList = []
RoadDict = {}
[RoadDict.setdefault(x, []) for x in range(0, CityCount)]
#dict.fromkeys(range(0, CityCount), [])
#Build a nested array of roads
Ports = []
for n in range(0,CityCount-1):
    temp = [int(i) for i in sys.stdin.readline().split()]
    RoadDict[temp[0]-1].append([temp[1]-1,temp[2]])
    RoadDict[temp[1]-1].append([temp[0]-1, temp[2]])
    RoadList.append(temp)
    if CityStates[temp[0]-1] == "0":
        Ports.append(temp[0]-1)
    if CityStates[temp[1]-1] == "0":
        Ports.append(temp[1]-1)
 
#Convert to numpy array
#RoadMatrix = numpy.array(RoadList)
#Cycle through roads to find ones that connect to a given node, then build a dictionary which indexes each connected road
#for a in range(0,CityCount):
#    tempList = RoadDict[a]
#    for b in range(0, len(tempList)):
#        tempList.sort(key= lambda x: x[1])
#    RoadDict[a] = tempList
#Actually find something
currentNode = 0
nodeDistances = [0]+[math.inf]*(CityCount-1)
totalDistances = 0


unvisited_nodes = [x for x in range(CityCount)]
#shortest_path = {}
#previous_nodes = {}
#start_node = 0
 
def connection(node, target):
    node = node
    target = target
    for con in RoadDict[node]:
        if(int(con[0]) == target):
            return int(con[1])
    return 0

class Node():
    def __init__(self, nodeVal) -> None:
        self.value = nodeVal
        #self.root = None
        self.distance = math.inf
    #def setParent(self, root):
    #    self.root = root
    def addDistance(self, distance):
        if(distance < self.distance):
            self.distance = distance
 
#Initialize nodes:
NodeList = []
for i in range(0, CityCount):
    NodeList.append(Node(i))
    if not int(CityStates[i]):
        NodeList[i].addDistance(0)

PortNodes = []
for i in range(0, len(Ports)):
    PortNodes.append(NodeList[Ports[i]])
bingus=[]
sum = 0
for startingNode in PortNodes:
    #treeList = []
    node = startingNode
    startingNodevalue = startingNode.value
    travelledNodes = [False]*CityCount
    #nodeIterator = 0
    Queue = []
    Queue.append(startingNode)
    travelledNodes[startingNodevalue] = True
    
    while Queue:
        node = Queue[0]
        Queue.pop(0)
        nodeValue = node.value 
        for neighbor in RoadDict[nodeValue]:
            neighborNode = NodeList[neighbor[0]]
            if(CityStates[neighbor[0]] == "0"):
                travelledNodes[neighbor[0]] = True

            elif(not travelledNodes[neighbor[0]]):
                #    neighborNode.setParent(node)
                travelledNodes[neighbor[0]] = True
                Queue.append(neighborNode)
               # neighborNode.setParent(node)
                neighborNode.addDistance(connection(nodeValue, neighborNode.value)+node.distance)

for node in NodeList:
    sum += node.distance
print(sum)


#print(datetime.datetime.now() - start_time)

Test 1

Group: 1, 2

Verdict: ACCEPTED

Test 2

Group: 1, 2

Verdict: ACCEPTED

Test 3

Group: 1, 2

Verdict: ACCEPTED

Test 4

Group: 1, 2

Verdict: ACCEPTED

Test 5

Group: 1, 2

Verdict: ACCEPTED

Test 6

Group: 1, 2

Verdict: ACCEPTED

Test 7

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 8

Group: 1, 2

Verdict: ACCEPTED

Test 9

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 10

Group: 1, 2

Verdict: ACCEPTED

Test 11

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 12

Group: 2

Verdict: ACCEPTED

Test 13

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 14

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 15

Group: 1, 2

Verdict: ACCEPTED

Test 16

Group: 1, 2

Verdict: ACCEPTED

Test 17

Group: 1, 2

Verdict: ACCEPTED

Test 18

Group: 1, 2

Verdict: ACCEPTED

Test 19

Group: 1, 2

Verdict: ACCEPTED

Test 20

Group: 1, 2

Verdict: ACCEPTED

Test 21

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 22

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 23

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 24

Group: 1, 2

Verdict: ACCEPTED

Test 25

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 26

Group: 1, 2

Verdict: ACCEPTED

Test 27

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 28

Group: 1, 2

Verdict: ACCEPTED

Test 29

Group: 2

Verdict: TIME LIMIT EXCEEDED

Test 30

Group: 1, 2

Verdict: ACCEPTED

Test 31

Group: 2

Verdict: TIME LIMIT EXCEEDED