CLASSMATE NAMES

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Vamshi would like to code to get the longest common text from the initial position of every classmate's first name. Help Vamshi to code it. ### Input - First line will contain $T$, number of students. - Each newline contains of a single line of, input the first name the student. ### Output output in a single line the longest common text as described. print null if there is no such text. ### C

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solution.cppC++17

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