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 > Collatz Steps > Editorial

Collatz Steps — Solution & Editorial

Back to the Problem

Direct simulation; within this range the longest chain is 524 steps (intermediate values exceed 106, so use 64-bit).

Complexity: O(steps)

Watch out: Intermediates overflow 32 bits (e.g. 3×704511 chains past 2×109... use long long).