ABC-Strings

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Mike likes strings. He is also interested in algorithms. A few days ago he discovered for himself a very nice problem: You are given an AB-string S. You need to count the number of substrings of S, which have an equal number of 'A'-s and 'B'-s. Do you know how to solve it? Good. Mike will make the problem a little bit more difficult for you. You are given an ABC-string S. You need to coun

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solution.cppC++17

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