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Member
Andriy
Last logged in Apr 29, 2026

Activity

Attempted questions, problems, quizzes, and roadmap resources in 2026

Contribution Graph for 2026
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Staff rank badge
Rank
Staff
Tier 5 of 11
Total XP
73,601
Senior rank badgeSenior
Principal rank badgePrincipal
26,399 XP to Principal56%
Questions
34
Solved
Problems
16
Solved
Quizzes
0
Completed
Awards
0
Received
Streak
0
Days
Best Streak
7
Days

Recently Completed

TitleStatusDate
CAnother string question?
MediumLanguageKnowledge
Mar 12, 2026
CPeas in a pod.
EasyConcurrency
Mar 8, 2026
Cache Coherence Optimization
CookedConcurrency
Mar 8, 2026
Cache Coherence
CookedComputerArchitecture
Mar 8, 2026
CC++ is a…
EasyLanguageKnowledge
Mar 4, 2026
Amdahl's Law Application
CookedConcurrency
Mar 1, 2026
CMemory order I
EasyConcurrency
Mar 1, 2026
CSpin wars
EasyConcurrency
Mar 1, 2026
CWe're both from the future!
MediumConcurrency
Mar 1, 2026
Cross-thread Exception Handling
CookedConcurrency
Mar 1, 2026
CAsync surprise party
EasyConcurrency
Mar 1, 2026
A onephore
CookedConcurrency
Mar 1, 2026
CWait, I'm sleeping
EasyConcurrency
Mar 1, 2026
How fine is the grain?
EasyConcurrency
Mar 1, 2026
CSomething is wrong.
EasyConcurrency
Mar 1, 2026
A thread-safe stack.
EasyConcurrency
Mar 1, 2026
Accumulate it all in parallel.
EasyConcurrency
Mar 1, 2026
Locking Granularity Tradeoffs
EasyConcurrency
Mar 1, 2026
CLocked up, they won't let me out.
EasyConcurrency
Mar 1, 2026
No progress.
EasyConcurrency
Mar 1, 2026
CParallel pitfalls
EasyConcurrency
Mar 1, 2026
CHey, I'm waiting to be unlocked.
EasyConcurrency
Mar 1, 2026
CYou're not part of our group.
MediumConcurrency
Mar 1, 2026
What am I guarding?
CookedConcurrency
Mar 1, 2026
CBypass the mutex, or not?
EasyConcurrency
Mar 1, 2026
How does it mutex?
MediumConcurrency
Mar 1, 2026
Sharing data the nice way.
CookedConcurrency
Mar 1, 2026
When are we racing, and what is the condition?
EasyConcurrency
Mar 1, 2026
CWhat's suspect?
EasyConcurrency
Mar 1, 2026
Joined together.
EasyConcurrency
Mar 1, 2026
CTransferring ownership.
EasyConcurrency
Mar 1, 2026
CI really want to be with you.
MediumConcurrency
Mar 1, 2026
2 Types of Parallelism
EasyConcurrency
Mar 1, 2026
CImplement stop_token
EasyConcurrency16.0ms
Mar 1, 2026
CWhat pointer?
EasyConcurrency
Mar 1, 2026
CImplement SPSC Queue
EasyConcurrency57.5ms
Feb 27, 2026
CImplement Reader-Writer Lock
HardConcurrency409.7ms
Feb 26, 2026
CImplement mutex
MediumConcurrency266.8ms
Feb 25, 2026
CImplement shared_ptr
MediumLanguageKnowledge14.9ms
Feb 24, 2026
CA/B Arbitrage
EasyLanguageKnowledge23.7ms
Feb 20, 2026
CImplement unique_ptr
EasyLanguageKnowledge13.8ms
Feb 20, 2026
CWe're stronger together.
EasyLanguageKnowledge14.6ms
Feb 19, 2026
CPoints and boundaries!
EasyLanguageKnowledge71.2ms
Feb 19, 2026
CTenured Instrument Management
EasyLanguageKnowledge12.4ms
Feb 19, 2026
CTrue-sharing data structure
EasyConcurrency3.5ms
Feb 19, 2026
CMix it in with open-high-low-close
EasyDesignPatterns3.5ms
Feb 19, 2026
C3D Space
CookedLanguageKnowledge5.0ms
Feb 19, 2026
CI'm singleton.
CookedDesignPatterns6.6ms
Feb 19, 2026
CBuild a Histogram
CookedLanguageKnowledge5.1ms
Feb 19, 2026
PythonKeep it moving (averages)
CookedLanguageKnowledge122.9ms
Feb 11, 2026

Approved Submissions

TitleTypeRewardApproved
You're not part of our group.Question
$2monero
Feb 25, 2026
Hey, I'm waiting to be unlocked.Question
$2monero
Feb 25, 2026

Progress Overview

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