class TrieNode(object):
    def __init__(self):

        self.isEnd = False
        self.children = dict()


class Trie(object):
    def __init__(self):
        self.root = TrieNode()

    def insert(self, word):
        """
        Inserts a word into the trie.
        :type word: str
        :rtype: void
        """
        currNode = self.root

        for c in word:
            if c not in currNode.children:
                currNode.children[c] = TrieNode()

            currNode = currNode.children[c]

        currNode.isEnd = True

    def search(self, word):
        """
        Returns if the word is in the trie.
        :type word: str
        :rtype: bool
        """
        currNode = self.root

        for c in word:
            if c not in currNode.children:
                return False

            currNode = currNode.children[c]

        return currNode.isEnd

    def startsWith(self, prefix):
        """
        Returns if there is any word in the trie
        that starts with the given prefix.
        :type prefix: str
        :rtype: bool
        """
        currNode = self.root

        for c in prefix:
            if c not in currNode.children:
                return False

            currNode = currNode.children[c]

        return True


# Your Trie object will be instantiated and called as such:
# obj = Trie()
# obj.insert(word)
# param_2 = obj.search(word)
# param_3 = obj.startsWith(prefix)