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Maximum Nesting Depth of Two Valid Parentheses Strings

A string is a valid parentheses string (denoted VPS) if and only if it consists of "(" and ")" characters only, and: We can similarly define the nesting depth depth(S) of any VPS...

A string is a valid parentheses string (denoted VPS) if and only if it consists of "(" and ")" characters only, and:

We can similarly define the nesting depth depth(S) of any VPS S as follows:

For example, "", "()()", and "()(()())" are VPS's (with nesting depths 0, 1, and 2), and ")(" and "(()" are not VPS's.

Given a VPS seq, split it into two disjoint subsequences A and B, such that A and B are VPS's (and A.length + B.length = seq.length).

Now choose any such A and B such that max(depth(A), depth(B)) is the minimum possible value.

Return an answer array (of length seq.length) that encodes such a choice of A and B: answer[i] = 0 if seq[i] is part of A, else answer[i] = 1. Note that even though multiple answers may exist, you may return any of them.

Maximum Nesting Depth of Two Valid Parentheses Strings diagram

Example 1

Input: seq = "(()())"

Output: [0,1,1,1,1,0]

Example 2

Input: seq = "()(())()"

Output: [0,0,0,1,1,0,1,1]

Constraints

  • 1 <= seq.size <= 10000

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