We will hold UOJ CSP Round 2026 (UOJ Easy Round #15) contest! You will be given 4 problems to be solved in 4 hours.

• Contest link: https://uoj.ac/contest/115
• Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?iso=20261023T1800&p1=33&ah=4
• Writers: Gellyfish, pp_orange, cool_milo, Leftist_G, cybher
• Testers: le0n, ItsMyGo, jiangbowen, strapple, tianbincheng, Kevin114514, Crysfly
• Duration: 4 hours
• Difficulty: CF Div 2/ARC--

The contest will follow the OI rules: Only sample tests will be judged during the contest. After the contest ends, all submissions will be rejudged using the full test data, and the final scores will be determined by the final judging results.

We are looking forward to your participation!

We will hold UOJ Easy Round #14 contest! You will be given 4 problems to be solved in 3.5 hours.

• Contest link: https://uoj.ac/contest/114
• Start Time: https://www.timeanddate.com/worldclock/fixedtime.html?iso=20261006T1800&p1=33&ah=3&am=30
• Writers: wangmarui, kele7
• Duration: 3.5 hours
• Difficulty: CF Div 1.5/ARC++
• The point values: 100-100-100-100

The contest will follow the IOI rules: Each problem can be submitted up to 50 times, and scores can be viewed in real-time. All the problems will have subtasks, the final score will be based on the highest-scoring submission.

You can see the scoreboard during the contest.

The contest is rated for everyone, you will be count as rated only if you opened at least one problem.

We are looking forward to your participation!