human
Count pairs ( i , j ) from arrays arr [ ] & brr [ ] such that arr [ i ] | Function to count the pairs such that given condition is satisfied.
Stores the sum of element at each corresponding index.
Find the sum of each index of both array.
Stores frequency of each element present in sumArr.
Initialize number of pairs.
Add possible vaid pairs.
Return Number of Pairs.
Given array arr [ ] and brr [ ].
Size of given array.
Function calling"
How can the above be solved in Python?

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What is a code to count pairs ( i , j ) from arrays arr [ ] & brr [ ] such that arr [ i ] and the other steps required?
assistant
#Here is code to count pairs ( i , j ) from arrays arr [ ] & brr [ ] such that arr [ i ] and the other steps required.
 def CountPairs ( a , b , n ) :
	C = [ 0 ] * n
	for i in range ( n ) :
		C [ i ] = a [ i ] + b [ i ]
	freqCount = dict ( )
	for i in range ( n ) :
		if C [ i ] in freqCount . keys ( ) :
			freqCount [ C [ i ] ] += 1
		else :
			freqCount [ C [ i ] ] = 1
	NoOfPairs = 0
	for x in freqCount :
		y = freqCount [ x ]
		NoOfPairs = ( NoOfPairs + y * ( y - 1 ) // 2 )
	print ( NoOfPairs )
arr = [ 1 , 4 , 20 , 3 , 10 , 5 ]
brr = [ 9 , 6 , 1 , 7 , 11 , 6 ]
N = len ( arr )
CountPairs ( arr , brr , N )