Welcome to the second Mackenzie Logic Evaluation (MLE) of the 2019-2020 year!

This contest consists of 2 problems, the difficulty of which may range anywhere from CCC Junior to CCC Senior. You will have 2 hours to complete the contest. There will be no bonuses or time penalty. Problems may or may not have subtasks.

The problems will be in an increasing order of difficulty. You are recommended to read all the problems.

The problem setter of this contest will be Ninjaclasher.

For this contest, there will be no feedback. This means, when you submit, you will only be judged on the sample test data. After the contest, you will be rejudged on the full set of data to determine your score.

Before the contest date, you may wish to check out the tips page.

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 very strict — most of the time, it requires your output to match 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++.
  • Read carefully, and try to attempt all the problems. They may not be as hard as they seem!

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

Good luck.


Problem Points AC Rate Users
MLE '19 Contest 2 P1 - FUN 7p 26.7% 11
MLE '19 Contest 2 P2 - Meta 12p 40.9% 5


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