CPWeeklyChallenge

Weekly competitive programming posts for CCC practice, problem solving, and student learning outcomes.

CCC practice articles with structured explanations and implementation notes.

CCC 2026 J4 – Snail Path Solution & Analysis
June 1, 2026
Simulate the snail step by step, track slimy squares with a visited set, and count every revisit.
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CCC 2026 J5/S2 – Beams of Light Solution & Analysis
May 31, 2026
Use interval coverage, a difference array, and prefix sums to answer illumination queries efficiently.
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