import pyutil as pyu
pyu.get_local_pyinfo()

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

from typing import List

class Solution:
  def findLHS(self, nums: List[int]) -> int:
    ans = 0
    count = Counter(nums)

    for num, freq in count.items():
      if num + 1 in count:
        ans = max(ans, freq + count[num + 1])

    return ans

new Solution().findLHS()