The Xor Problem

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What's a good coding contest without a problem involving range queries?! So here goes... You are given an array $A$ and $Q$ queries, each of which can be of the following types: - Type 1: Given $i$ and $x$, change $A[i]$ to $x$ - Type 2: Given $L$, $R$ and $k$, find the number of subarrays starting exactly from index $L$ and ending at or before $R$, whose xor values are equal to $k$. ###Input:

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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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