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 > Attend the Most Events > Editorial

Attend the Most Events — Solution & Editorial

Back to the Problem

Sweep days in order; each day, among events already started and not yet ended, greedily attend the one ending soonest (min-heap of end days). This exchange-argument greedy is optimal.

Complexity: O((N + maxday) log N)

Watch out: Attending the earliest-ending available event each day — not the earliest-starting — is what maximizes the count.