Find the XOR

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Its Christmas time and Santa wants to distribute presents in your city. The city is a straight line with houses numbered 1 to $n$, where $n$ is the number of houses. Initially all the houses have 0 presents. Santa can perform two types of tasks: - $1$ $i$:Santa drops a present in the $ith$ house. - $2$ $i$: Santa calculates magic number for the $ith$ house. The magic number for the $ith$ hou

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solution.cppC++17

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