Unique Oops

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You are given a sentence. If a word occurs more than once, replace its duplicate occurences (2nd, 3rd, ...) with "oops". Do not replace the first occurence. ###Input: - First line: String of length n with space-separated words comprising of lowercase English alphabets. ###Output: - First line: String with required modifications. ###Constraints: - $5 \leq n \leq 5 \times 10^3$

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solution.cppC++17

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