Maximum Candies You Can Get from

class Solution:
    def maxCandies(self, status: List[int], candies: List[int], keys: List[List[int]], containedBoxes: List[List[int]], initialBoxes: List[int]) -> int:
        if len(initialBoxes) == 0:
            return 0
        if 1 not in status:
            return 0      
        new_Boxes = []   
        num_candies = 0          
        while True:
            flag = False
            for b in initialBoxes:
                if status[b] == 1:
                    flag = True
                    num_candies += candies[b]
                    new_Boxes += containedBoxes[b]
                    if len(keys[b]) != 0:
                        for j in keys[b]:
                            status[j] = 1
                    initialBoxes.remove(b)
            initialBoxes += new_Boxes
            new_Boxes = []
            if not flag:
                break                            
        return num_candies