Driver Code
public static void Main ( ) { int n = 3 ; int [ , ] mat = { { 0 , 1 , 1 } , { 1 , 0 , 1 } , { 1 , 1 , 1 } } ; HashSet < int > mpp = new HashSet < int > ( ) ; Console . WriteLine ( ( numOfWays ( mat , n , 0 , mpp ) ) ) ; } }