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Given an m x n integers matrix, return the length of the longest increasing path in matrix.

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From each cell, you can either move in four directions: left, right, up, or down. You may not move diagonally or move outside the boundary (i.e., wrap-around is not allowed).

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Example 1:

\n\"\"\n
\nInput: matrix = [[9,9,4],[6,6,8],[2,1,1]]\nOutput: 4\nExplanation: The longest increasing path is [1, 2, 6, 9].\n
\n\n

Example 2:

\n\"\"\n
\nInput: matrix = [[3,4,5],[3,2,6],[2,2,1]]\nOutput: 4\nExplanation: The longest increasing path is [3, 4, 5, 6]. Moving diagonally is not allowed.\n
\n\n

Example 3:

\n\n
\nInput: matrix = [[1]]\nOutput: 1\n
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Constraints:

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