leetcode-2024-05-16.py

"""
Question Link: https://leetcode.com/problems/evaluate-boolean-binary-tree/?envType=daily-question&envId=2024-05-16
"""

from typing import Optional


# Definition for a binary tree node.
class TreeNode:
    def __init__(self, val=0, left=None, right=None):
        self.val = val
        self.left = left
        self.right = right


class Solution:
    def evaluateTree(self, root: Optional[TreeNode]) -> bool:
        if not root:
            return True

        val = root.val

        if val == 0:
            return False
        elif val == 1:
            return True
        elif val == 2:
            return self.evaluateTree(root.left) or self.evaluateTree(root.right)
        else:
            return self.evaluateTree(root.left) and self.evaluateTree(root.right)