We will hold Luogu Round 222 on Luogu. This is a Div.1+2 Round sponsored by Meracode. English statement will be provided officially.

• Contest URL:
  • Div.1: https://www.luogu.com.cn/contest/201695
  • Div.2: https://www.luogu.com.cn/contest/240146
• Start Time: 04.26 14:00(UTC+8)
• Duration: 240 minutes
• System: IOI
• Difficulty: similar to CF Div.1/Div.2
• Staffs: Kevin0501, _saixingzhe_, Milkcat2009, Wf_yjqd, E.Space, Little09
• Rated range: Div.1 is rated for all; Div.2 is rated for <=2000 rating on Luogu
• Score Distribution: 100-100-100-100-100 for each div. Div.2C will be Div.1A, Div.2D will be Div.1B, Div.2E will be Div.1C.

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