Note 1: This is not the official editorial. I prepared these solutions while testing the problems as a tester before the contest.

Note 2: The video tutorial is for those who prefer learning from videos and want to see implementation tips alongside the problem explanations.

Watch the full video: Video Link

Check out my submission: A (346358188), B (346358219), C (346358246), D (346358285), E (346358316), F (346358353), G (346358382).

Based on your feedback, I changed the video type from premiere to regular.

Please let me know how you prefer this kind of problem-solving video.

Please let me know which style of problem-solving video you prefer.

• Full virtual contest experience: Record everything from the start — reading the problem, thinking aloud, solving, and coding (example).
  → Gives the complete journey of solving a problem, but tends to be quite long.

• Live reasoning after solving on paper: Record the thinking and coding after having a rough solution idea.
  → Might include some mistakes or wrong attempts before getting AC.

• Post-solve explanation: First solve and get AC, then record a short and clear video explaining the solution idea and implementation (like in this video).
  → Concise and focused on insights.