输出为
```
1
```
by pyiming @ 2024-02-28 20:29:26
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by Fesdrer_AK_IOI @ 2024-02-29 14:43:51
这道题只要输出3就能过2个测试点，真的不信你[逝世](https://www.luogu.com.cn/record/151047441)
by 18816301299yzh @ 2024-03-16 10:43:02