import pyutil as pyu
pyu.get_local_pyinfo()

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

from typing import List

class Solution:
  def hammingWeight(self, n: int) -> int:
    ans = 0

    for i in range(32):
      if (n >> i) & 1:
        ans += 1

    return ans

new Solution().hammingWeight()