import pyutil as pyu
pyu.get_local_pyinfo()

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

from typing import List

class Solution:
  def numberOfBoomerangs(self, points: List[List[int]]) -> int:
    ans = 0

    for x1, y1 in points:
      count = defaultdict(int)
      for x2, y2 in points:
        ans += 2 * count[(x1 - x2)**2 + (y1 - y2)**2]
        count[(x1 - x2)**2 + (y1 - y2)**2] += 1

    return ans

new Solution().numberOfBoomerangs()