Welcome to the 2015-16 Trudeau Logic Evaluation!

The problem writers of this contest are ZQFMGB12, d, and TT1103.

The TLE will be a 4-hour virtual contest, which will allow contestants to participate in any 4-hour window between March 11, 12AM EST and March 15, 12AM EDT. 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 large contest time window, we will be using a pretest/systest format in order to prevent cheating. On every problem, when you submit, you will receive your result on some of the test data, called preliminary tests (pretests). After the contest, we will rejudge all solutions on the complete set of test data, and that will determine your final score. Note that getting AC on pretests does not ensure that you will pass system testing.

The pretests will be weak, so be sure to check your algorithms' correctness and time complexity! In particular, non-AC submissions on the pretests will likely result in a score of 0 on the systests.

If you are from Trudeau and are interested in being on an ECOO team:

• Participate in this contest to receive priority in the selection process.
• Attend the Computer Science Club meeting on March 22, 2016; we will be revealing ECOO teams and handing out permission forms.
• Join the Pierre Elliott Trudeau High School organization on the Organizations list. Preferably, make it your first organization so that "Trudeau" will appear next to your name on the results.

This contest will be rated for all participants.

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. You will have 4 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 4 hours from when you started, or until the hard deadline (March 15, 12AM EDT), 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 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.