Subtasks, practice and fair play

Questions 1 to 5 of 8

1. 1. A triple loop over N = 3000 takes about how many steps?

   Type a number.

2. 2. Which is the strongest reason to write the brute force for subtask 1 before the full solution?

   Subtask 1 is worth more points than subtask 3, so it always scores moreIt is cheap to write and safe to submit, and it gives a reference to check faster ideas against on small inputsIt replaces the full solution, so you never need to write oneIt is the only way to read the subtask table correctly
3. 3. Which steps are part of the lesson's upsolving routine after a virtual round?

   Pick every answer that is true.

   Read the full editorial code first, then retype itTry the missed problem for a fixed block, such as 30 minutes, with no editorialRead the editorial for the idea only, then close it and write your own solutionTest your solution against a brute force on random small inputs
4. 4. A friend says: "I read the full accepted code for problem E, wrote the same code, and marked E as solved in my log." What is wrong?

   Nothing, since the code they wrote is their own and it passedThey should have read the tags first, to save timeThey read the full solution before trying the idea, so they studied a solution and did not solve the problemA 30-minute block is too short to count as an upsolve
5. 5. Which practice choice follows the lesson's rating-band advice?

   Only problems two bands above your level, so every one feels like a challengeOnly problems you can already solve in one try, to keep your solve rate highRandom problems across all bands, so the topic log stays variedA problem a little above your level that stretches you by one new idea, with a hint only after about 45 minutes of trying