Google OA | Xor Summation of Arrays | 2023.

Question

Given two arrays arr1, arr2 of length n where 1 <=n <= 10^5.

Build a matrix mat of N*N where in the
mat[i][j] = arr1[i]^arr2[j].

Then return the summation of the matrix formed. I could able to solve it in O(N*N). Can this be solved in lesser time complexity ? Appericate any help here.