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0 and 1 in BIT (牛客多校) (位运算取反性质)

发布时间 2023-08-06 10:29:16作者: VxiaohuanV

 思路:

  • 性质: 取反, 相当于-x-1 (%mod下思考)
  • 于是 -x-1, (可以单独看) 利用前最后处理
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