Playlist

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You are given a playlist of a radio station since its establishment. The playlist has a total of n songs. What is the longest sequence of successive songs where each song is unique? Input The first input line contains an integer n: the number of songs. The next line has n integers k_1,k_2,\ldots,k_n: the id number of each song. Output Print the length of the longest sequence of unique songs.

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solution.cppC++17

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