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Fill the Grid with three colors A, B and C
How to find the numbers of ways to fill a grid (3*n)array, with three colors A, B and C.
Under the following constraints:
1) All the n cells of the same row can't have the same color.
2) All the 3 cells of the same column can't have the same color.
Sample input : if n=2, then output or number of ways = 174.
Please explain the approach for this.
