import pyutil as pyu
pyu.get_local_pyinfo()

print(pyu.ps2("python-dotenv"))

from typing import List

class Solution:
  def scoreOfParentheses(self, S: str) -> int:
    ans = 0
    layer = 0

    for a, b in zip(S, S[1:]):
      if a + b == '()':
        ans += 1 << layer
      layer += 1 if a == '(' else -1

    return ans

new Solution().scoreOfParentheses()