Hello again Codeforces!

Two weeks ago we held the first round of VNOI Cup 2024! We hope that everyone who joined the contest had a great time and enjoyed our problems!

On Sunday, June 16, at 21:00 GMT+7 , we will hold the mirror contest of the VNOI Cup Qualification Round 2, and we would like to invite you to join the contest. Remember, if you are a Vietnamese national, consider joining the official round.

VNOI Cup is a Competitive Programming competition hosted by VNOI (Vietnam Olympiads in Informatics community), a group of Vietnamese programmers like you, working together to make programming competitions more fun and challenging in Vietnam. We're a non-profit organization dedicated to supporting the growth of competitive programming in Vietnam. This competition is one of the many ways we aim to achieve this goal!

Again, a big shoutout to our awesome problem setters and testers! Thanks to their hard work, we have an exciting contest ready for you.

• xuanquang1999, atoiz, vinfat, JettyOller, Lihwy, BJoozz, darkkcyan, TrungNotChung, lanhf, MofK, Kuroni, Lomk for making the problems!
• errorgorn, DylanSmith, McPqndq, awoo, ToxicPie9, shash4321, Savior-of-Cross, KIRIJIJI, Fanarill, g237182, soup, and Optoed for testing and providing value feedback!

The contest will feature 7 problems to be solved in 180 minutes. Points for problems increase with difficulty. Each problem may consist of multiple subtasks, and you only earn points for a subtask if you pass all test cases for that subtask. Penalty points are calculated as the time of the last scoring submission plus 5 minutes for each incorrect submission. Contestants are ranked by total points, with ties broken by ascending penalty points.

Remember, the second mirror contest starts on Sunday, June 16, at 21:00 GMT+7. The official contest will start 1 hour sooner, at 20:00 GMT+7.

• Official Contest Link: https://oj.vnoi.info/contest/vnoicup24_r2.
• Mirror Contest Link: https://oj.vnoi.info/contest/vnoicup24_r2_mirror.
• Detailed rule in Vietnamese: https://cup.vnoi.info/rule/.

We're excited to see you in the contest! Good luck, and happy coding! 🚀