Addition

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Recently, Chef studied the [binary numeral system](https://en.wikipedia.org/wiki/Binary_number) and noticed that it is extremely simple to perform bitwise operations like [AND](https://en.wikipedia.org/wiki/Bitwise_operation#AND), [XOR](https://en.wikipedia.org/wiki/Bitwise_operation#XOR) or [bit shift](https://en.wikipedia.org/wiki/Bitwise_operation#Bit_shifts) on non-negative integers, while it

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