import pyutil as pyu
pyu.get_local_pyinfo()

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

from typing import List

class Solution:
  def findJudge(self, n: int, trust: List[List[int]]) -> int:
    count = [0] * (n + 1)

    for a, b in trust:
      count[a] -= 1
      count[b] += 1

    for i in range(1, n + 1):
      if count[i] == n - 1:
        return i

    return -1

new Solution().findJudge()