human
Count ways to select N pairs of candies of distinct colors ( Dynamic Programming + Bitmasking ) | Function to count ways to select N distinct pairs of candies with different colours.
If n pairs are selected.
Stores count of ways to select the i - th pair.
Iterate over the range [ 0 , n ].
If pair ( i , j ) is not included.
Driver Code"
Solution in Python:
 ... Can you provide a code to count ways to select N pairs of candies of distinct colors ( Dynamic Programming + Bitmasking ) and the other steps required?
assistant
#Here is code to count ways to select N pairs of candies of distinct colors ( Dynamic Programming + Bitmasking ) and the other steps required.
 def numOfWays ( a , n , i = 0 , blue = [ ] ) :
	if i == n :
		return 1
	count = 0
	for j in range ( n ) :
		if mat [ i ] [ j ] == 1 and j not in blue :
			count += numOfWays ( mat , n , i + 1 , blue + [ j ] )
	return count
if __name__ == " _ _ main _ _ " :
	n = 3
	mat = [ [ 0 , 1 , 1 ] , [ 1 , 0 , 1 ] , [ 1 , 1 , 1 ] ]
	print ( numOfWays ( mat , n ) )