B - Brackets

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A bracket sequence is called regular if it is possible to obtain correct arithmetic expression by inserting characters $«+»$ and $«1»$ into this sequence. For example, sequences $(())(), ()$ and $(()(()))$ are regular, while $)(, (()$ and $(()))($ are not. If $s$ is a regular bracket sequence with depth $d$ then $(s)$ is a regular bracket sequence with depth $d+1$. For example, depth of $()()()

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solution.cppC++17

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