Welcome to the 2018-19 Trudeau Logic Evaluation!

The problem writers are eric574, Darcy_Liu, and __. The problem testers are ZQFMGB12 and d.

The TLE will be a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window between 12:00 AM EDT, March 30, 2019 and 11:59 PM EDT, April 5, 2019. Of course, it is forbidden to use two accounts to participate, and it is also forbidden to discuss the problems and/or their solutions with other people during the entire contest period.

Due to the long contest period, to prevent cheating, the scoreboard will be hidden and all problems will use the pretest/systest format.

This contest will be rated for all participants who submit at least once.

NOTE: Due to issues with P2, the contest will unfortunately not be rated. Please contact Darcy_Liu on the DMOJ Slack for any inquiries. We apologize for any inconvenience this may have caused.

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

The contest consists of 6 questions with a wide range of difficulties, and you can get partial marks for partial solutions in the form of subtasks. If you cannot solve a problem fully, we encourage you to go for these partial marks. The difficulty of a problem may be anywhere from CCC Junior to CCO level. It is highly recommended to read and attempt 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 (April 5, 11:59 PM EDT), whichever comes first.

After joining the contest, you proceed to the Problems tab to begin.

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++.

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.


  • -10
    scanhex  commented on April 6, 2019, 8:54 a.m.

    This comment is hidden due to too much negative feedback. Show it anyway.

    • 3
      ZQFMGB12  commented on April 6, 2019, 4:25 p.m.

      Your solution involved mutation, which the problem statement clearly disallowed.

      • 0
        scanhex  commented on April 6, 2019, 5:41 p.m. edit 2
        1. Did you see other problems in this contest? If so, you would not even say something about problem statement.
        2. It is not an excuse for problem authors. Wrong solutions pass everyday on every competition platform and only this particular jury think they are allowed to ban someone's solution after the end of the competition. Authors never change feedback that was seen by a participant, because it is their fault, not participant's. Also, in this problem authors had already seen that they were not right after the first banned solution and they didn't even bother to check it further or to make a clarification.

        • 6
          Plasmatic  commented on April 6, 2019, 8:36 p.m.

          It was literally said in the problem statement..... very explicitly.

          I don't see any issue with this.

        • 11
          ZQFMGB12  commented on April 6, 2019, 6:17 p.m. edit 4

          You make a fair point. I will forward this to the problem setters to see what they will do.

          EDIT: I asked the problem setters and their response is:

          Deal with it

          • -7
            scanhex  commented on April 6, 2019, 6:42 p.m.

            This comment is hidden due to too much negative feedback. Show it anyway.

          • -7
            scanhex  commented on April 6, 2019, 6:40 p.m.

            This comment is hidden due to too much negative feedback. Show it anyway.

  • 7
    avid  commented on April 5, 2019, 7:34 p.m.

    Good contest. I had my doubts, but I really did enjoy the problems. Cannot wait for future TLE contests.

  • 1
    kipply  commented on March 22, 2019, 11:37 a.m.

    baby trudeaus :o <3 <3 <3 cute cute cute

    • 28
      gnad  commented on March 22, 2019, 4:32 p.m.

      A code copier and a cheater as problemsetters. How cute.

      • 4
        p1geon  commented on March 22, 2019, 8:12 p.m.

        to be fair carol thinks a lot of things are cute