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

Contribution Graph for 2026
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Thu
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Less
More
Correct
299
Incorrect
38

Computer Architecture

19/61

Networking

30/96

Language Knowledge

204/710

Design Patterns

0/20

Concurrency

4/78

Operating Systems

67/103

Data

0/0

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Rank
Staff
Tier 5 of 11
Total XP
57,970
42,030 XP to Principal30%
Them
24
Their rank
Score
261
Roughly Correct - Incorrect
Grinders
110898
Users with submissions
Strugglers
101159
Negative score users
Top
0.02%
User

Recently Completed

TitleStatusDate
Herb's Destructor5/31/2026
Indexing arrays5/31/2026
& and &&5/31/2026
How does it allocate?5/31/2026
Non-const reference T5/31/2026
I thought I understood this.5/29/2026
fp compatibility5/29/2026
Machine Language Components5/29/2026
3 Cache Misses5/29/2026
Pipeline Performance Calculation5/29/2026
Pipelining Performance Benefits5/29/2026
Single-Cycle Processor Limitations5/29/2026
Endian? Is that a word?5/29/2026
L1 Cache Split5/29/2026
Warm and toasty5/29/2026
Memory Addressing Modes5/29/2026
Branch Instruction Types5/29/2026
How big are the lines?5/29/2026
Process States5/29/2026
Linux, what are you using?5/29/2026
Thinking of memory strategically5/29/2026
Pay your fair share.5/29/2026
Page Table Present Bit5/29/2026
Swap Space Function5/29/2026
LRU Replacement Policy5/29/2026
The Page Replacement Algorithm5/29/2026
More data more problems5/29/2026
Stayin' Dead5/29/2026
TCP Sequence Numbers5/29/2026
MTU Violation5/29/2026
Special Use Address 25/29/2026
Why even IP?5/29/2026
IP Forwarding5/29/2026
You're too big!5/29/2026
__future__5/21/2026
What are __slots__?5/21/2026
Minus 05/21/2026
Slothful __slots__5/21/2026
Class is in functional session5/17/2026
Rolling mean?5/17/2026
What DataFrame?5/17/2026
Pythonic return computation5/17/2026
Server failures I5/13/2026
Join the Rust cult5/13/2026
Rust++5/13/2026
Flip-flopping5/13/2026
Your (GHR) size matters5/13/2026
Semaphore Basic Definition4/19/2026
Wheel of misfortune4/19/2026
Join me4/19/2026
Clean up the thread4/19/2026
random_insert4/17/2026
Lions and buffalos4/17/2026
Understand your environment4/17/2026
Rust is... strange.4/17/2026
Shadowing4/17/2026
Sync?4/17/2026
Do-while...4/17/2026
Not this, again.4/17/2026
Shortcuts4/17/2026
0.0_74/17/2026
Once or twice?4/17/2026
Who’s Pointing at What?4/17/2026
It's unique, but is it big?4/17/2026
CTAD4/17/2026
Which kind of vector?4/17/2026
ZST behavior4/16/2026
Return what?4/16/2026
Multicast Address Range4/16/2026
Class A Networks4/16/2026
Buddy Allocation System4/16/2026
The birth of the process4/16/2026
It's magic.4/16/2026
Kcats4/16/2026
Return from where?4/16/2026
Top of the stack4/16/2026
Registering RAM4/16/2026
Broadcast vs Multicast4/16/2026
Underlying Protocols4/16/2026
The number of fragments4/16/2026
What's statically wrong?4/16/2026
Fascinating number4/16/2026
Drawing socks 4/16/2026
Drop it like it's hot.4/6/2026
float vec!4/6/2026
I'm leaking bytes! 24/4/2026
Can you treat me as an equal?4/4/2026
The whole shebang4/4/2026
Where can I find you?4/4/2026
Simple system call overhead4/4/2026
System Initialization4/4/2026
What does Tom do?4/3/2026
The country of Python's GDP4/3/2026
Compounding Returns in Python4/3/2026
Sortino vs Sharpe4/3/2026
DataFrames and Tuples4/3/2026
Knight in Shining Armour4/3/2026
Stationary Time Series4/3/2026
Linear Regression Basics4/3/2026
Comparisons2/20/2026
Quantum Defaults2/20/2026
How do you call a deaf person?2/20/2026
I have a small dict 32/20/2026
Do you understand creation?2/19/2026
It's a simple struct.2/19/2026
Initialization order.2/19/2026
He fumbled the [] operator.2/19/2026
Who comes first?2/19/2026
In a Diamond2/19/2026
I am the shadows.2/19/2026
A Code Review 12/19/2026
Why std::make_shared?2/19/2026
Storage Duration2/19/2026
Which way do I read this, again?2/19/2026
Which way do I read this?2/19/2026
TCP Data Integrity2/19/2026
TCP Flow Control2/19/2026
Whichcast2/19/2026
Why am I quicker than you?2/19/2026
Base my bounds2/19/2026
Forever single2/14/2026
Borrow Trouble2/14/2026
Screw the protocol!2/14/2026
My snake ate my trash2/14/2026
Memory is all you need2/14/2026
a + b + c2/14/2026
Using namespace std;2/14/2026
Remove it from me.2/14/2026
print function?2/14/2026
Code, Stack, Heap2/14/2026
You Dirty Bit.2/14/2026
How Many Page Translations?2/14/2026
Multi-level Page Tables2/14/2026
TLB Miss Handling2/14/2026
TLB Purpose2/14/2026
Shake it, shake, shake it.2/14/2026
The fundemental page2/14/2026
PML?2/14/2026
Page Fault Mechanism2/14/2026
Virtual address structure2/14/2026
Under the Shadow2/13/2026
Zero Division, Error?2/13/2026
Signed Integer Overflow2/13/2026
Speak the language.2/13/2026
Scheduler Trade-offs2/13/2026
Take your place!2/13/2026
Zero Division Error2/13/2026
The Loop's Last Laugh2/13/2026
Set the Record Straight2/13/2026
So, how big is X?2/13/2026
Hash Collisions2/13/2026
A Slice of Confusion2/13/2026
Small Numbers2/13/2026
Shallow Copy2/13/2026
"Hello"2/13/2026
Who'd you call?1/8/2026
Half and Half1/8/2026
IPC mutex1/8/2026
Schrödinger's Initializer1/8/2026
structs of structs of structs 21/8/2026
Are you pessimistic?1/8/2026
Spin wars1/8/2026
So, what else?12/27/2025
Solarpunk12/27/2025
I'm nothing without you12/26/2025
Your code doesn't look like mine12/26/2025
std::cout vs std::cerr12/26/2025
Ouroboros 512/26/2025
Cache me if you can! 312/26/2025
2 variables 1 auto12/26/2025
Class inStruction 12/26/2025
Case and point 212/26/2025
Case and point 112/26/2025
What's wrong with this query?12/26/2025
SQL commands matter12/26/2025
Where is ARP?12/26/2025
Interacting with the OS12/26/2025
System vs Procedure Call12/26/2025
After main()12/26/2025
Before main()12/26/2025
How are jobs stored?12/26/2025
Virtual Address Mask12/26/2025
Why an OS?12/26/2025
Dealing with Fragmentation12/26/2025
Split segments12/26/2025
It's our time!12/25/2025
Is it used?12/25/2025
stderr12/25/2025
Overloading ++12/25/2025
A Loop Without A Loop12/25/2025
What does 'SQL' stand for?12/25/2025
Where'd it go?12/25/2025
Observe Closely12/25/2025
tuple vs list12/25/2025
Cereal printer12/25/2025
Comma'on!12/25/2025
Catch me if you can!12/25/2025
& through me.12/25/2025
What the fork?12/25/2025
Unpack the pops12/25/2025
Who are you pointing to?12/25/2025
System Dichotomy12/25/2025
You don't always matter to me12/25/2025
Wait, I'm sleeping12/25/2025
indentation no more12/21/2025
tupleware12/21/2025
The bare minimum12/21/2025
String them together.12/21/2025
The New API12/21/2025
String placement12/21/2025
String is strange12/21/2025
Speedup12/21/2025
**args12/21/2025
You're a snake.12/21/2025
Allocation decisions12/21/2025
Zip it12/21/2025
Printing the printer.12/21/2025
Present your id12/21/2025
Comparsion12/21/2025
Slice and dice 112/21/2025
Constipated constexpr12/21/2025
Constructing it.12/21/2025
Memory Segmentation12/20/2025
Stayin' Alive12/20/2025
When are we racing, and what is the condition?12/20/2025
Unsigned Integer Overflow12/20/2025
TCP Socket12/20/2025
Private to Public12/20/2025
Translate which address?12/20/2025
Fragmentation 112/20/2025
Who can share?12/20/2025
Path to return12/20/2025
Either lower or uppercase12/20/2025
Get truthed.12/20/2025
globals()12/20/2025
It's over, Load!12/20/2025
Ouroboros 112/20/2025
Put it right there12/19/2025
To Interrupt or To Poll12/15/2025
Bodyguard12/15/2025
Reinventing the cat12/15/2025
Default shared pointer12/14/2025
To <T> or not to <T>12/14/2025
Vector growth 112/14/2025
Vector growth 212/14/2025
Changing Const?12/14/2025
Vector construction12/14/2025
Chop Chop Chop12/14/2025
Typename...12/14/2025
Replace all the functions!12/14/2025
delete it.12/14/2025
Initialization?!12/14/2025
uint32_t12/14/2025
++ before or after?12/14/2025
So, how big is vector?12/14/2025
Shifting off the edge12/14/2025
(a = b)12/14/2025
Import test.py12/14/2025
Wheel file12/14/2025
import this12/14/2025
Know your math12/14/2025
range(0, round(π)) + 112/14/2025
Wannabe12/14/2025
Pointers in Python12/14/2025
Python Overloading12/14/2025
Strings in Python12/14/2025
Simple Type12/14/2025
Exception Unwinding12/14/2025
Multiple Assignment12/14/2025
type of { }12/14/2025
Default Floating Point12/14/2025
sorted() vs sort()12/14/2025
Cache Affinity12/14/2025
2 Types of Parallelism12/14/2025
GIL12/14/2025
Walrus12/14/2025
Ampersand12/14/2025
How big is a pointer?12/14/2025
Special Use Address 112/14/2025
What's a lambda?12/14/2025
Stack Direction12/14/2025
The headers you never knew12/14/2025
Simple Pointer Math12/14/2025
Are you still alive?12/14/2025
RAM to Cache Memory Transport12/14/2025
96% of you will fail this.12/14/2025
So, where is 1,000 stored?12/14/2025
Shared pointer constructor12/14/2025
So, where is X stored?12/14/2025
What is a Software Thread?12/14/2025
If the OS is running...12/14/2025
Is Python...?12/14/2025
What does 'JSON' stand for?12/14/2025
Dunder Dunder Dunder12/14/2025
Network Layers12/14/2025
What does 'CSV' stand for?12/14/2025
Class vs Struct12/14/2025
In Python...12/14/2025
So, what's UDP?12/14/2025
So, what's TCP?12/14/2025
Ouroboros 412/14/2025
Over here, then over there.11/18/2025
I love big numbers11/18/2025
Yes, I know what a ... is11/18/2025
Assign to what?11/18/2025
Inspector Gadget11/18/2025
Mutual friends11/18/2025
Lord of Dot11/18/2025
They're stacked.11/18/2025
Zip it 310/20/2025
Understand lambdas, understand C++.10/20/2025
locals()10/20/2025
Let's go the other way.10/20/2025
Change it for me.10/20/2025
Default Arguments 10/20/2025
East to West10/20/2025
The perfect union.10/20/2025
Specialize me.10/19/2025
Floating points, you sure?10/19/2025
Inquisitive Inheritance10/19/2025
OS OSI10/19/2025
Am I unique?10/19/2025
Type, enter, run10/19/2025
Know your yield10/19/2025
I know what a tuple is.10/19/2025
What even is a string?10/19/2025
P switch T switch.10/19/2025
Linux CFS10/19/2025
Slash slash10/19/2025
Give me a hint!10/19/2025
get ref10/19/2025
C++ is a…10/19/2025
del and __del__10/19/2025
__main__10/19/2025
Switch hitter10/19/2025
Pepsi10/19/2025
We love birds!10/19/2025

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