It is clear that our previous announcement has met unreasonable downvotes.

We will hold Luogu Round 227 on Luogu. This is a Div.2 round sponsored by Hetao Education. English statement will be provided officially. You can click the button to change language.

• Contest URL: https://www.luogu.com.cn/contest/219334
• Start Time: 05.25 14:00(UTC+8)
• Duration: 240 minutes
• System: IOI
• Difficulty: similar to CF Div.2
• Staffs: SoLX, cdx123456, _Hugoi_, born_to_sun, haizhi_w, zzzyyyyhhhhh, lichenxi114, xvtianze
• Rated range: <=2000 rating on Luogu
• Score distribution: 100-100-100-100

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