human
What is a code to pair with given sum and maximum shortest distance from end and the other steps required given the following:
Pair with given sum and maximum shortest distance from end | function to find maximum shortest distance.
stores the shortest distance of every element in original array ..
shortest distance from ends.
if duplicates are found , b [ x ] is replaced with minimum of the previous and current position 's  shortest distance.
similar elements ignore them cause we need distinct elements.
Driver code"
Solution in Python:
assistant
#Here is code to pair with given sum and maximum shortest distance from end and the other steps required.
 def find_maximum ( a , n , k ) :
	b = dict ( )
	for i in range ( n ) :
		x = a [ i ]
		d = min ( 1 + i , n - i )
		if x not in b . keys ( ) :
			b [ x ] = d
		else :
			b [ x ] = min ( d , b [ x ] )
	ans = 10 ** 9
	for i in range ( n ) :
		x = a [ i ]
		if ( x != ( k - x ) and ( k - x ) in b . keys ( ) ) :
			ans = min ( max ( b [ x ] , b [ k - x ] ) , ans )
	return ans
a = [ 3 , 5 , 8 , 6 , 7 ]
K = 11
n = len ( a )
print ( find_maximum ( a , n , K ) )