Room Number

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Ari is an engineering student and lives in a hostel which has $n$ rooms. The rooms numbers are from 1 to n but are arranged in a weird way. Firstly all odd integers from 1 to n (in ascending order), then all even integers from 1 to n (also in ascending order). Suppose your friend's room number is at position $k$, now its your task to find out the room number. ### Input - First line will contain

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solution.cppC++17

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