Nuttela Needs a Little More Help

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Nuttela and Horsbug were teasing Shahid, when they suddenly remember the pending assignment. They rushed home to complete the task within the stipulated time. Provided with a string $S$, they have to find vowels in certain substrings of $S$. Since this would be a very easy task, this time the teacher also asked them to update certain substrings of the string. Looking at the watch, they panic. The

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solution.cppC++17

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