,a. ⊕" means bitwise XOR operation.
Given n n positive integers a_1,a_2,ldots, a_n a 1 ,a 2 ,…,a n , request: sum_{i=1}^nsum_{j=1}^n(a_ioplus a_j)^2 ∑ i=1 n ∑ j=1 n (a i ⊕a j ) 2 Among them, " oplus ⊕" means bitwise XOR operation.
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