import pyutil as pyu
pyu.get_local_pyinfo()

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

from typing import List

class Solution:
  def boldWords(self, words: List[str], s: str) -> str:
    n = len(s)
    ans = []
    # bold[i] := True if s[i] should be bolded
    bold = [0] * n

    boldEnd = -1  # s[i:boldEnd] should be bolded
    for i in range(n):
      for word in words:
        if s[i:].startswith(word):
          boldEnd = max(boldEnd, i + len(word))
      bold[i] = boldEnd > i

    # Construct the with bold tags
    i = 0
    while i < n:
      if bold[i]:
        j = i
        while j < n and bold[j]:
          j += 1
        # s[i:j] should be bolded
        ans.append('<b>' + s[i:j] + '</b>')
        i = j
      else:
        ans.append(s[i])
        i += 1

    return ''.join(ans)

new Solution().boldWords()