706. Design HashMap

class HashMap:
    def __init__(self):
        self.children={}
class MyHashMap:

    def __init__(self):
        self.root=HashMap()

    def put(self, key: int, value: int) -> None:
        cur=self.root
        
        cur.children[key]=value

    def get(self, key: int) -> int:
        cur=self.root
        if(key in cur.children):
            return cur.children[key]
        return -1
    def remove(self, key: int) -> None:
        cur=self.root
        if(key in cur.children):
            del cur.children[key]


# Your MyHashMap object will be instantiated and called as such:
# obj = MyHashMap()
# obj.put(key,value)
# param_2 = obj.get(key)
# obj.remove(key)