<prompt> Kutokana na mizizi ya mti binary na integer targetSum, kurudi kweli kama mti ina mizizi-kwa-kijani njia kama vile kuongeza juu ya maadili yote pamoja na njia ni sawa na targetSum. Leaf ni node bila watoto.  <response>: To solve this problem, you can perform a depth-first search DFS on the binary tree, starting from the root node. During the search, maintain a running total of the values seen so far on the current path. When a leaf node is reached, check if the running total equals the targetSum. If it does, return true; otherwise, continue the search. You can repeat this process for all possible paths from the root to a leaf node.Heres a Python implementation:def has_path_sumroot, targetSum: if not root: return False stack root, root.val while stack: node, total stack.pop if not node.left and not node.right: if leaf node if total targetSum: return True if node.left: stack.appendnode.left, total node.left.val if node.right: stack.appendnode.right, total node.right.val return False This implementation has a time complexity of On, where n is the number of nodes in the binary tree, and a space complexity of Oh, where h is the height of the tree. 