Perfect Timing

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Girish has recently joined IISc. Being a highly enthusiastic student he wants to attend as many classes as possible. He has prepared a list of classes he wants to attend along with their timings. But he realizes that he can not attend all the classes as some of their timings clash with each other. Given the schedule of classes, help Girish identify the maximum number of classes he can attend. Inp

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solution.cppC++17

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