Hello Codeforces!

We're thrilled to announce the third season of the VNOI Cup! 🎉

We invite you to join the mirror round of our programming 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!

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, devinqu, McPqndq, awoo, ToxicPie9 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.

The first mirror contest starts on June 2, 2024, 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_r1
• Mirror Contest Link: https://oj.vnoi.info/contest/vnoicup24_r1_mirror
• Detailed rule in Vietnamese: https://cup.vnoi.info/rule/

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