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Generate an array of K elements such that sum of elements is N and the condition a [ i ] < a [ i + 1 ] <= 2 * a [ i ] is met | Set 2 | Function that print the desired array which satisfies the given conditions.
If the lowest filling condition is void , then it is not possible to generate the required array.
Increase all the elements by cnt.
Start filling from the back till the number is a [ i + 1 ] <= 2 * a [ i ].
Get the number to be filled.
If it is less than the remaining numbers to be filled.
less than remaining numbers to be filled.
Get the sum of the array.
If this condition is void at any stage during filling up , then print - 1.
Else add it to the sum.
If the sum condition is not satisified , then print - 1.
Print the generated array.
Driver code"
Solution in Python:

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Write me a code to generate an array of K elements such that sum of elements is N and the condition a [ i ] < a [ i + 1 ] <= 2 * a [ i ] is met and the other steps required?
assistant
#Here is code to generate an array of K elements such that sum of elements is N and the condition a [ i ] < a [ i + 1 ] <= 2 * a [ i ] is met and the other steps required.
 def solve ( n , k ) :
	mini = 0
	x1 = 1
	a = [ 0 for i in range ( k ) ]
	for i in range ( 1 , k + 1 ) :
		mini += x1
		a [ i - 1 ] = x1
		x1 += 1
	if ( n < mini ) :
		print ( " - 1" , end = " " )
		return
	rem = n - mini
	cnt = int ( rem / k )
	rem = rem % k
	for i in range ( k ) :
		a [ i ] += cnt
	i = k - 1
	while ( i > 0 and rem > 0 ) :
		xx = a [ i - 1 ] * 2
		left = xx - a [ i ]
		if ( rem >= left ) :
			a [ i ] = xx
			rem -= left
		else :
			a [ i ] += rem
			rem = 0
		i -= 1
	sum = a [ 0 ]
	for i in range ( 1 , k ) :
		if ( a [ i ] > 2 * a [ i - 1 ] ) :
			print ( " - 1" , end = " " )
			return
		sum += a [ i ]
	if ( sum != n ) :
		print ( " - 1" , end = " " )
		return
	for i in range ( k ) :
		print ( a [ i ] , end = " ▁ " )
if __name__ == ' _ _ main _ _ ' :
	n = 26
	k = 6
	solve ( n , k )