• 个人简介

    思贵沉潜,学贵有恒。

  • 通过的题目

  • 最近活动

    This person is lazy and didn't join any contests or homework.
  • 最近编写的题解

    This person is lazy and didn't write any solutions.
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题目标签

2021
1
NOIp 提高组
1
O2优化
1