human
Maximum possible sub | Function to return the maximum sub - array sum after at most x swaps.
To store the required answer.
For all possible intervals.
Keep current ans as zero.
To store the integers which are not part of the sub - array currently under consideration.
To store elements which are part of the sub - array currently under consideration.
Create two sets.
Swap at most X elements.
Remove the minimum of the taken elements.
Add maximum of the discarded elements.
Update the answer.
Return the maximized sub - array sum.
Driver code"
How can the above be solved in Python?
assistant
#Here is code to maximum possible sub and the other steps required.
 def SubarraySum ( a , n , x ) :
	ans = - 10000
	for i in range ( n ) :
	for j in range ( i , n ) :
		curans = 0
		pq = [ ]
		pq2 = [ ]
		for k in range ( n ) :
		if ( k >= i and k <= j ) :
			curans += a [ k ]
			pq2 . append ( a [ k ] )
		else :
			pq . append ( a [ k ] )
		pq . sort ( )
		pq . reverse ( )
		pq2 . sort ( )
		ans = max ( ans , curans )
		for k in range ( 1 , x + 1 ) :
		if ( len ( pq ) == 0 or len ( pq2 ) == 0 or pq2 [ 0 ] >= pq [ 0 ] ) :
			break
		curans -= pq2 [ 0 ]
		pq2 . pop ( 0 )
		curans += pq [ 0 ]
		pq . pop ( 0 )
		ans = max ( ans , curans )
	return ans
a = [ 5 , - 1 , 2 , 3 , 4 , - 2 , 5 ]
x = 2 ;
n = len ( a )
print ( SubarraySum ( a , n , x ) )