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
Happy Number math implementation 0 — 1200
Multiples of A or B math 0 — 1200
Integer Square Root math binary-search 0 — 1200
The Divisor Game math games 0 — 1200
Race to N math games 0 — 1200
Binary Addition math strings 0 — 1200
Squares in a Range math 0 — 1200
Spreadsheet Column Name math implementation 0 — 1200
Compound Doubling math 0 — 1200
Count Cubes in a Range math 0 — 1200
Count Triangulars in a Range math 0 — 1200
Count Fibonaccis in a Range math 0 — 1200
Digits on the Pages math 0 — 1200
All the Rectangles math combinatorics 1
20%
1200
Make Everyone Equal math sorting 0 — 1200
Repdigits in Range math digit-dp 0 — 1200
Angle Between Clock Hands math 0
0%
1300
Is It Prime math number-theory 0 — 1300
Count the Primes math number-theory 0 — 1300
Largest Prime Factor math number-theory 0 — 1300
Prime Factorization math number-theory 0 — 1300
Count the Divisors math number-theory 0 — 1300
Modular Power math 0 — 1300
Kaprekar's Routine math implementation 0 — 1300
Zeros at the End of N! math 0 — 1300
XOR of 1..N math bitwise 0 — 1300
N-th Gray Code math bitwise 2
100%
1300
Grid Points on a Segment math geometry 0 — 1300
Take-Away Game math games 0 — 1300
What Day Was It math implementation 0 — 1300
Palindromic Prime math 0 — 1300
Emirp math 0 — 1300
Two Circles math geometry 0 — 1300
A Row of Pascal's Triangle math combinatorics 0 — 1300
Two Kinds of Stamps math 0 — 1300
Count Pentagonals in a Range math 0 — 1300
Count Hexagonals in a Range math 0 — 1300
Zero Then One math strings 0 — 1300
Geometric or Not math 0 — 1300
Counting the Carries math implementation 0 — 1300
All the Squares math 0 — 1300
Beautiful Permutation math implementation 0 — 1300
Emptying Two Piles math 0 — 1300
Local or Global math implementation 0 — 1300
Divisible by Digit Count math digit-dp 0 — 1300
The Josephus Survivor math implementation 0 — 1400
Best Product of Three math sorting 0 — 1400
Sum of Divisors math number-theory 0 — 1400
Goldbach Split math number-theory 0 — 1400
Twin Prime Pairs math number-theory 0 — 1400