Question: A two-dimensional array M represents a maze. If M[i][j] = -1, the cell is blocked; otherwise, it's traversable. You can move between adjacent cells. How

A two-dimensional array M represents a maze. If M[i][j] = -1, the cell is blocked; otherwise, it's traversable. You can move between adjacent cells. How many paths using right- and down-moves go from the top left M[0][0] to the bottom right M[-1][-1]?

The solution should be written in Python.

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