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

Practice Problems

Daily Challenge: Fewest Hops (1300) Solve it to start a streak

math Problems

282 practice problems tagged math , from difficulty 800 to 2100 — solve them in our in-browser judge with instant verdicts. Browse all problems.

Related: matrix-exponentiation implementation number-theory combinatorics geometry games bitwise sorting prefix-sums digit-dp

ProblemTopics Solvers Acceptance Difficulty
Last K Digits of a Power math 0 — 1400
Routes Across a Grid math combinatorics 0 — 1400
Catalan Number math combinatorics 0 — 1400
Last Digit of Fibonacci math 0 — 1400
Days Apart math implementation 0 — 1400
The N-th Ugly Number math dp 0 — 1400
Round-Robin Printer math implementation 0 — 1400
The Infinite Digit String math 0 — 1400
March to the Median math sorting 0 — 1400
The Two Missing Numbers math 0 — 1400
Two Equal Sets math greedy 0 — 1400
Painting the Fence math combinatorics 17
46%
1400
Sum of Fourth Powers Modulo math 0 — 1400
Sum over All Subarrays math prefix-sums 0 — 1500
Minimum Swaps to Sort math sorting 0 — 1500
The Next Prime math number-theory 0 — 1500
Modular Inverse math 0 — 1500
Binomial Coefficient math combinatorics 0 — 1500
Distributing Identical Coins math combinatorics 0 — 1500
Double or Add One math greedy 0 — 1500
The Two Jugs math 0 — 1500
Classic Nim math bitwise games 0 — 1500
Grand Digit Total math 0 — 1500
All the Gaps math sorting 0 — 1500
Sum of Pair Minimums math sorting 0 — 1500
Sum of Pair Maximums math sorting 0 — 1500
Divisible Subarray Sums math prefix-sums 0 — 1500
Euler's Totient math number-theory 0 — 1600
Geometric Series Modulo math 0 — 1600
Count the Derangements math combinatorics 0 — 1600
Perfect Power math 0 — 1600
Farthest by Manhattan math geometry 0 — 1600
Number Spiral math 0 — 1600
Counting a Digit math 0 — 1600
Numbers That Contain D math 0 — 1600
Two Peaceful Knights math combinatorics 0 — 1600
Range Products, Zeros Included math prefix-sums 0 — 1600
Independent Cycles math graphs union-find 0 — 1600
Range GCD Queries math sparse-table 0 — 1700
All Digits Different math 0 — 1700
Two Remainder Conditions math number-theory 0 — 1700
Lucas Numbers Modulo math matrix-exponentiation 0 — 1700
A 2-3 Recurrence math matrix-exponentiation 0 — 1700
A 3-2 Recurrence math matrix-exponentiation 0 — 1700
A 1-6 Recurrence math matrix-exponentiation 0 — 1700
Recurrence f=a+2b math matrix-exponentiation 0 — 1700
Recurrence f=4a+b math matrix-exponentiation 0 — 1700
Fibonacci Shifted math matrix-exponentiation 0 — 1700
Recurrence f=2a+2b math matrix-exponentiation 0 — 1700
Recurrence f=6a-8b math matrix-exponentiation 0 — 1700