Got through the first three parts okay but was writing in C++ and just too slow.
Start by clarifying the problem statement and constraints for each subproblem, then solve them in order of increasing difficulty, explaining your reasoning and trade-offs. For each, discuss brute force first, then optimize using appropriate algorithms and data structures, and analyze time/space complexity.
Pro tip: Demonstrate strong communication by thinking aloud and proactively discussing edge cases and potential optimizations, even if you don't finish all subproblems. Show that you can adapt your approach as the problem evolves.
Ask questions to understand the input/output format, constraints, and what each subproblem entails. Confirm assumptions before proceeding.
For the first subproblem, describe a simple, correct approach even if inefficient. This establishes a baseline and shows you can solve the problem.
For each subsequent subproblem, identify bottlenecks in the previous solution and propose improvements using better algorithms or data structures.
For each solution, state the time and space complexity, and discuss any trade-offs between different approaches.
Walk through small examples and edge cases (e.g., empty input, large values) to verify correctness and robustness.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.