# [LeetCode]#2236. Root Equals Sum of Children

2 min readNov 4, 2022

**Environment: Python 3.8**

**Key technique: tree node**

You are given the `root`

of a **binary tree** that consists of exactly `3`

nodes: the root, its left child, and its right child.

Return `true`

*if the value of the root is equal to the **sum** of the values of its two children, or *`false`

* otherwise*.

**Example 1:**

**Input:** root = [10,4,6]

**Output:** true

**Explanation:** The values of the root, its left child, and its right child are 10, 4, and 6, respectively.

10 is equal to 4 + 6, so we return true.

**Example 2:**

**Input:** root = [5,3,1]

**Output:** false

**Explanation:** The values of the root, its left child, and its right child are 5, 3, and 1, respectively.

5 is not equal to 3 + 1, so we return false.

**Analysis:**

- If root.val = root.left.val + root.right.val, return True
- Else, return False

**Solution:**

`class Solution:`

def checkTree(self, root):

if (root.val == root.left.val + root.right.val):

return True

else:

return False

**Submissions:**