XOR Magic

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Vivek loves to play with sequences and XORs, so he challenges you to solve the following problem. You are given a sequence $A_1, A_2, \ldots, A_N$. You should answer $Q$ queries. In each query, you are given a subsequence $A_L, A_{L+1}, \ldots, A_R$; the answer to this query is $\sum_{i=L}^R A_i \oplus (i-L)$, where $\oplus$ denotes the bitwise XOR operator. ### Input - The first line of the inp

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L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

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solution.cppC++17

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