Logan and his XOR debacle

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The enmity between Logan and Donald Pierce never ceases to exist. However, once Logan and Donald came face to face. Donald got agitated and asked Logan to prove his true mettle by solving a puzzle. Logan is provided an array Arr[] of N integers. He can select only a single integer from the array and can perform certain special operations on it any number of time. An operation can be one of the

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solution.cppC++17

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