Hiring process8 levels
  1. 1 IQ Test
  2. 2 Additional Online Test (If Required)
  3. 3 Office Interview with Hiring Manager
  4. 4 Unpaid Test Task (Motivation Check)
  5. 5 Paid Test Task and Follow-Up Interview
  6. 6 Iterative Paid Test Tasks
  7. 7 Office Verification
  8. 8 Final Interview with the Founder

Problems > Hull Edge Energy > Editorial

Hull Edge Energy — Solution & Editorial

Back to the Problem

Compute the hull (monotone chain), then sum (Δx)² + (Δy)² around its boundary — all integer arithmetic.

Complexity: O(N log N)

Watch out: Squared lengths reach ~1013 — 64-bit.