Hello, welcome to a mock CCC! Here are the parameters of the contest:

• Contestants must write the mock CCC under CCC rules. Notably, contestants may not consult the Internet outside of accessing the relevant parts of the contest via the TSSOJ platform or consulting language documentation, and contestants may not use any prewritten code.
• Contest duration: 3 hours.
• Number of problems: 5, full feedback, with subtasks. The problems follow the CCC format of being worth 15 marks each. All problems have explicit subtasks.
• Rated.
• Number of submissions allowed per problem: 50.
• Problem setters for this contest: jsumabat

Clarification requests for the contest must be routed through the clarification system provided on TSSOJ, and in IOI format. Note that, in particular, clarification requests must come in the form of yes/no questions.

Any suspicious behaviour will result in being forcibly ranked at the bottom of the scoreboard.

Before the contest date, you may wish to check out the tips and help pages.

The contest consists of 5 questions with a range of difficulty from CCC Senior 1 to CCC Senior 5. It is highly recommended to read all of the problems. You will have 3 hours to complete the contest. After the contest window begins, you may begin at any time. Your personal timer will start counting down, and you will be able to submit until 3 hours from when you started, or until the hard deadline, whichever comes first.

After joining the contest, you proceed to the Problems tab to begin. You can also go to Users if you wish to see the rankings.

We have listed below some advice as well as contest strategies:

• Start from the beginning. Ties will be broken by the sum of times used to solve the problems starting from the beginning of the contest. The last submission time of your highest score will be used.
• Remove all extra debugging code and/or input prompts from your code before submitting. The judge is strict — your output must match the judge output exactly.
• Do not pause program execution at the end. The judging process is automated. You should use stdin / stdout to perform input / output, respectively.
• It is guaranteed that all the problems will be solvable with C++. We do not guarantee that all problems are solvable in C, Java or Python.

At the end of the contest, you may comment below to appeal a judging verdict. In the case of appeals, the decision(s) of our staff is final.