We will hold 【MX-X11/J13】Mengxiong Weekly (Open) on Luogu. This is a Div.1+Div.3 round provided by our collaborator. English statement will be provided by DeepSeek R1. You can switch the language of the problem description.

• Contest URL:
  • Div.1: https://www.luogu.com.cn/contest/240581
  • Div.3: https://www.luogu.com.cn/contest/240582
• Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?iso=20250412T1330&p1=237
• Duration: 270 minutes
• System: IOI
• Difficulty: Div.1+Div.3
• Staffs: FantasyNumber, zjdl, DoNotMoZheng, Zunpet, 0x0002, StarSilk, Kubic
• Rated range: Unrated on Luogu
• Score Distribution:
  • Div.1: 100-100-100-100-100-100
  • Div.3: 100-100-100-100-100
  • The Div.3C will be Div.1A, Div.3D will be Div.1B, etc.

We are looking forward to your participation!

#pragma GCC optimize is temporaily banned for some reason on Luogu.

• A tutorial on using Luogu
• A brief introduction to Chinese NOI