Python:实现even_tree偶数树算法
# pylint: disable=invalid-name
from collections import defaultdict
def dfs(start: int) -> int:
"""DFS traversal"""
# pylint: disable=rede
# pylint: disable=invalid-name
from collections import defaultdict
def dfs(start: int) -> int:
"""DFS traversal"""
# pylint: disable=rede