Description
Input
First line, you will get the row and column of the matrix.
1 <= R <= 105, 1 <= C <= 105
Second line, you will get a 2D matrix, for each element N in the matrix:
0 <= N <= 1
Output
If there is no path to the destination, return 0.
If there is a path to the destination, return the distance of the path from root to destination. It is guaranteed that there is only one solution for each testcase.
(Remember to print out "\n" after the answer)