human
Minimum sum after subtracting multiples of k from the elements of the array | function to calculate minimum sum after transformation.
no element can be reduced further.
if all the elements of the array are identical.
check if a [ i ] can be reduced to a [ 0 ].
one of the elements cannot be reduced to be equal to the other elements.
if k = 1 then all elements can be reduced to 1.
Driver code"
Solution in Python:
assistant
#Here is code to minimum sum after subtracting multiples of k from the elements of the array and the other steps required.
 def min_sum ( n , k , a ) :
	a . sort ( reverse = False )
	if ( a [ 0 ] < 0 ) :
		return - 1
	if ( k == 0 ) :
		if ( a [ 0 ] == a [ n - 1 ] ) :
			return ( n * a [ 0 ] )
		else :
			return - 1
	else :
		f = 0
		for i in range ( 1 , n , 1 ) :
			p = a [ i ] - a [ 0 ]
			if ( p % k == 0 ) :
				continue
			else :
				f = 1
				break
		if ( f ) :
			return - 1
		else :
			if ( k == 1 ) :
				return n
			else :
				return ( n * ( a [ 0 ] % k ) )
if __name__ == ' _ _ main _ _ ' :
	arr = [ 2 , 3 , 4 , 5 ]
	K = 1
	N = len ( arr )
	print ( min_sum ( N , K , arr ) )