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# Count Paths for a Sum (medium)

## Problem Statement

Given a binary tree and a number ‘S’, find all paths in the tree such that the sum of all the node values of each path equals ‘S’. Please note that the paths can start or end at any node but all paths must follow direction from parent to child (top to bottom).

**Constraints:**

- The number of nodes in the tree is in the range
`[0, 1000]`

. - -10<sup>9</sup> <= Node.val <= 10<sup>9</sup>
`-1000 <= targetSum <= 1000`

## Try it yourself

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