Library and Headcount

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Problem description. In Bytelandian University, everyone has to enter his/her name on a computer when entering or leaving the library. The names are stored in a file on that computer. Assume that everyone adheres to this rule. Given the file, find out how many people are there in the library. There will not be spaces in names. Different people have different names. Input - The first line of

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solution.cppC++17

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