Explorer Maze Escape

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The Java Explorer is back, but his sensors are broken! You'll need to help him find the path to the goal. Given a map of the area (as a square grid), can you help the Explorer find the way from position [0,0] to the goal? The explorer can go right or down within in the grid, and cannot go through walls.

I/O Format

t for t test cases. Each test case consists of:
n for the size of the area
n*n square consisting of 0's, 1's and one 9.

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