Check if There Is a Valid Parentheses String Path: coding question

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Given an m×n grid of '(' and ')', determine whether there exists a down/right path from the top-left to bottom-right whose concatenated characters form a valid parentheses string. The core challenge is exploring paths while tracking a feasible parentheses balance (never negative and zero at the end), typically handled by DP/BFS over positions augmented with balance and aggressive pruning.

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Leetcode 2267. Check if There Is a Valid Parentheses String Path
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Check if There Is a Valid Parentheses String Path

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Check if There Is a Valid Parentheses String Path

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