We will hold 【MX-X19/J22】Mengxiong Weekly on Luogu. This is a Div.1+Div.3 round provided by our collaborator. English statement will be provided by DeepSeek V3. You can switch the language of the problem description.

• Contest URL:
  • Div.1: https://www.luogu.com.cn/contest/273609
  • Div.3: https://www.luogu.com.cn/contest/273610
• Start Time: 09-06 14:00 (GMT+8)
• Duration: 210 minutes
• System: IOI
• Difficulty: Div.1+Div.3
• Staffs: ma2021tyoi0037, Anemones, CutieSmileHaruka, wangmarui, hzy_____, LadyMisserina, Crysfly, StarSilk(ICPC World Finals 2025 Gold Medal Owner)
• Rated range: Unrated on Luogu
• Score Distribution:
  • Div.1: 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!

• A tutorial on using Luogu (Please note that #pragma GCC optimize is temporarily banned for some reason on Luogu.)
• A brief introduction to Chinese NOI