String Query

CodeChefRating 2973Open on judge ↗

Hey, you've got a new mission! This time your client ask you to write a editor and it should run fast! However the client's request is somehow strange, but they give a lot of money so your boss ask you to finish it as fast as possible. This editor deal with a string S. And the length |S| of the string S would never be smaller than 10. This editor must support the following 7 operations quickly. H

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solution.cppC++17

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