To run: g++ sudoku.cc ./a.out DIR_NUMBER
Each directory has 10 files with the initial unsolved sudoku puzzle in the given format: Each line corresponds to a row in sudoku puzzle followed by newline. The unknown numbers are 0.
Example: 8 0 0 2 5 4 0 7 0 2 0 0 0 7 1 8 5 0 0 7 6 0 9 0 2 0 1 3 5 2 9 6 0 1 8 4 0 0 7 3 0 0 6 9 2 0 0 0 1 8 0 7 3 5 7 0 1 0 3 0 0 0 8 0 0 0 5 2 0 9 1 0 0 9 0 0 0 0 4 0 3