CP Weekly Challenge
CP Weekly Challenges
Weekly CCC contest problem analysis with thinking process, Python/C++ solutions, common mistakes, and learning outcomes.
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CP Weekly Challenge | June 13, 2026
CCC 2024 J5 – Harvest Waterloo Solution & Analysis
Use BFS or DFS flood fill to harvest all reachable pumpkins and calculate their total value.
CP Weekly Challenge | June 1, 2026
CCC 2026 J4 – Snail Path Solution & Analysis
Simulate the snail step by step, track slimy squares with a visited set, and count every revisit.
CP Weekly Challenge | May 31, 2026
CCC 2026 J5/S2 – Beams of Light Solution & Analysis
Use interval coverage, a difference array, and prefix sums to answer illumination queries efficiently.
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