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Published: Nov 27, 2021 License: MIT Imports: 0 Imported by: 0

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856. Score of Parentheses (Medium)

Given a balanced parentheses string s, return the score of the string.

The score of a balanced parentheses string is based on the following rule:

  • "()" has score 1.
  • AB has score A + B, where A and B are balanced parentheses strings.
  • (A) has score 2 * A, where A is a balanced parentheses string.

 

Example 1:

Input: s = "()"
Output: 1

Example 2:

Input: s = "(())"
Output: 2

Example 3:

Input: s = "()()"
Output: 2

Example 4:

Input: s = "(()(()))"
Output: 6

 

Constraints:

  • 2 <= s.length <= 50
  • s consists of only '(' and ')'.
  • s is a balanced parentheses string.

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