你好, CodeForces!↵
↵
Our team members are excited to invite you to participate [Aleph Zero Round \*1](https://www.luogu.com.cn/contest/244720), this is our first contest in Luogu. It will begin at [``2025-06-30T16:15:00+8:00``](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20250630T1615&p1=33), and you will be given $3$ problems and $1$ hours to slove them. It will be held on IOI rules and unrated. The contest is a bit easier than CodeForces Div.3.↵
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Here are the problems：↵
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| Index | Problem | Problemer | Check | Score | Editorial |↵
| :--: | :--: | :--: | :--: | :--: | :--: |↵
| A | Wall City Defense Battle | [user:c_legg,2025-06-28] | [BitByBit](https://www.luogu.com.cn/user/1659487) | $200$ | [here](https://www.luogu.com.cn/article/211mvy7h) |↵
| B | Collecting Dice | [user:jsntzth,2025-06-28] | [user:c_legg,2025-06-28] | $300$ | [here](https://www.luogu.com.cn/article/6xu5bpq5)↵
| C | The Sum of Extrenums | [user:Corange,2025-06-28] | [user:jsntzth,2025-06-28] | $400$ | [here](https://www.luogu.com.cn/article/3t75mnp9) |↵
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Please notice:↵
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* English statement will be provided officially as well as Chinese statement.↵
* This is our first contest, and it may be too easy, please forgive us, the next round will be better.↵
↵
**UPD:** Because of C and [BitByBit](https://www.luogu.com.cn/user/1659487),Wwe have to delay the contest a little bit. I feel really sorry.
↵
Our team members are excited to invite you to participate [Aleph Zero Round \*1](https://www.luogu.com.cn/contest/244720), this is our first contest in Luogu. It will begin at [``2025-06-30T16:15:00+8:00``](https://www.timeanddate.com/worldclock/fixedtime.html?iso=20250630T1615&p1=33), and you will be given $3$ problems and $1$ hours to slove them. It will be held on IOI rules and unrated. The contest is a bit easier than CodeForces Div.3.↵
↵
Here are the problems：↵
↵
| Index | Problem | Problemer | Check | Score | Editorial |↵
| :--: | :--: | :--: | :--: | :--: | :--: |↵
| A | Wall City Defense Battle | [user:c_legg,2025-06-28] | [BitByBit](https://www.luogu.com.cn/user/1659487) | $200$ | [here](https://www.luogu.com.cn/article/211mvy7h) |↵
| B | Collecting Dice | [user:jsntzth,2025-06-28] | [user:c_legg,2025-06-28] | $300$ | [here](https://www.luogu.com.cn/article/6xu5bpq5)↵
| C | The Sum of Extrenums | [user:Corange,2025-06-28] | [user:jsntzth,2025-06-28] | $400$ | [here](https://www.luogu.com.cn/article/3t75mnp9) |↵
↵
Please notice:↵
↵
* English statement will be provided officially as well as Chinese statement.↵
* This is our first contest, and it may be too easy, please forgive us, the next round will be better.↵
↵
**UPD:** Because of C and [BitByBit](https://www.luogu.com.cn/user/1659487),
