Break the Balance

CodeChefRating 2698Open on judge ↗

JJ found a balanced parenthesis sequence. He does not like balanced parentheses so he will make the parenthesis sequence unbalanced by swapping adjacent characters in the sequence. JJ is lazy and wants to know minimum number of adjacent swaps required to make the given balanced parenthesis sequence unbalanced. A parenthesis sequence is called balanced if one can turn it into a valid mathematica

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solution.cppC++17

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