### Pacific Atlantic Water Flow #### Problem Description Given a 2D matrix `matrix` representing an island and the ocean, find the number of cells with water flowing from the Pacific Ocean to the Atlantic Ocean. Each cell is marked as either the ocean (`0`), the Pacific Ocean (`1`), the Atlantic Ocean (`2`), or the land (`3`). For water to flow from the Pacific Ocean to the Atlantic Ocean, cells must be connected horizontally or vertically. We are interested in counting the number of such cells. #### Rules and Constraints - The input `matrix` is a 2D array of integers, where each integer is either `0`, `1`, `2`, or `3`. - The input `matrix` is a rectangle, i.e., each row has the same number of columns, and there is at least one row. - The Pacific Ocean is marked by `1`, and the Atlantic Ocean is marked by `2`. - The land is marked by `3`. - Time complexity must be O(m \* n), where `m` is the number of rows and `n` is the number of columns in the matrix. - Space complexity must also be O(m \* n), as extra space may be needed to store the result. #### Task Write a function that takes the input `matrix` and returns the number of cells with water flowing from the Pacific Ocean to the Atlantic Ocean. ### Example **Input:** {"input_data":[1,2,3]} **Output:** [1,2,3]