Logo
Avatar
Member
Thragg

Activity

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

Contribution Graph for 2026
JanFebMarAprMayJunJulAugSepOctNovDec
Sun
Tue
Thu
Sat
Less
More
Correct
348
Incorrect
37

Computer Architecture

21/61

Networking

61/96

Language Knowledge

195/710

Design Patterns

11/20

Concurrency

5/78

Operating Systems

83/103

Data

0/0

Staff rank badge
Rank
Staff
Tier 5 of 11
Total XP
76,948
23,052 XP to Principal62%
Them
16
Their rank
Score
311
Roughly Correct - Incorrect
Grinders
110898
Users with submissions
Strugglers
101159
Negative score users
Top
0.01%
User

Recently Completed

TitleStatusDate
stderr6/23/2026
I'm leaking bytes! 26/23/2026
Semaphore Basic Definition6/23/2026
It's magic.6/23/2026
What the fork?6/23/2026
Understand lambdas, understand C++.6/21/2026
Kcats6/18/2026
Buddy Allocation System6/18/2026
Inverted Page Tables6/16/2026
What do you expect?6/14/2026
Functions imaging 6/14/2026
getcracked, crackedget?6/14/2026
Scalable Counter Design6/12/2026
Template Specializations 35/30/2026
TLB Switch5/30/2026
RAM to Cache Memory Transport5/30/2026
Weighing Jobs5/30/2026
Linux CFS5/30/2026
Linux, what are you using?5/30/2026
How are jobs stored?5/30/2026
Pay your fair share.5/30/2026
Ding ding ding!5/30/2026
I'm printing mom...5/26/2026
Minus 05/26/2026
const char* mission5/26/2026
That's BS!5/25/2026
Lambda defaults5/25/2026
They're stacked.5/25/2026
Can you treat me as an equal?5/25/2026
The const or the ?5/24/2026
East to West5/24/2026
You don't always matter to me5/24/2026
Keep your cool, keep it constant.5/24/2026
Constipated constexpr5/24/2026
Is it converted?5/24/2026
Preprocessor chicanery 5/24/2026
One after the other5/24/2026
Munch munch munch!5/24/2026
++ before or after?5/24/2026
Zero Division, Error Error?5/24/2026
Shortcuts5/24/2026
Let's go the other way.5/24/2026
Down shift5/24/2026
Shifting off the edge5/24/2026
Exit the function early.5/24/2026
3 exits5/24/2026
How'd you read this?5/24/2026
PML45/24/2026
Join me5/24/2026
SYN Flood5/23/2026
Poll position.5/23/2026
MAC Address Overlap5/23/2026
Broadcast Forwarding Behavior5/23/2026
Host Multicast Filtering5/23/2026
DNS Namespace Structure5/23/2026
DNS Zones Purpose5/23/2026
DNS Caching Benefits5/23/2026
TCP Urgent Pointer5/23/2026
Open Close Open Close5/23/2026
The bare minimum5/23/2026
Reinventing the cat5/23/2026
If Else... What?5/23/2026
Conditional Trap5/23/2026
Castaway5/23/2026
Null and void.5/23/2026
Double trouble?5/23/2026
Ranges of enums5/23/2026
A very small value5/23/2026
Whatever floats your cope.5/23/2026
To sign or not to sign?5/23/2026
Changing Const?5/23/2026
Floating points, you sure?5/23/2026
a + b + c5/23/2026
Unsigned - Unsigned5/23/2026
Unsigned Integer Overflow5/23/2026
Signed Integer Overflow5/23/2026
long vs int5/23/2026
Am I missing something?5/15/2026
Overloading lambdas!5/15/2026
Between two parts.5/15/2026
Nagle Algorithm Purpose5/15/2026
NAT or ...5/15/2026
I am the shadows.5/15/2026
Bodyguard5/15/2026
I don't give a flying float5/13/2026
To <T> or not to <T>5/7/2026
structs of structs of structs 25/7/2026
structs of structs of structs5/7/2026
If you've used templates, you've run into this.5/7/2026
This scares me.5/7/2026
A template, or not not?5/7/2026
Specialize me.5/7/2026
Templatey signatures.5/7/2026
Template sum 15/7/2026
Template Specializations 25/7/2026
Template Specializations 15/7/2026
First or second?5/7/2026
There is no free template.5/7/2026
Template sum 25/7/2026
Character classes5/7/2026
I'm concerned.5/7/2026
Inheriting Itself?5/7/2026
Enchanted maze5/7/2026
Weapons system5/7/2026
The final boss fight5/7/2026
Sprites5/7/2026
Spellcasting5/7/2026
Overthrow the hierarchy!5/7/2026
Delete Delete Delete5/7/2026
Maze creator5/7/2026
You're too big!5/7/2026
TCP RTO Calculation5/7/2026
The number of fragments5/7/2026
AIMD TCP5/6/2026
TCP Socket5/6/2026
++i ++i5/6/2026
_global_variable5/6/2026
The designated representative.5/6/2026
Schrödinger's Initializer5/6/2026
Forgot one?5/6/2026
C++ is a…5/6/2026
Limited Broadcast Usage5/5/2026
Broadcast Address Types5/5/2026
Silly Window Syndrome5/5/2026
The missing hops5/5/2026
TCP TIME_WAIT Purpose5/5/2026
Which way do I read this?5/5/2026
The four socket amigos.5/5/2026
Why am I quicker than you?5/5/2026
Are you still alive?5/5/2026
Which way do I read this, again?5/5/2026
How do I know you're still there?5/5/2026
Shake it, shake, shake it.5/5/2026
Ampersand5/5/2026
Chit chat.5/5/2026
Special Use Address 15/5/2026
Class B Networks5/5/2026
Class A Networks5/5/2026
Subnets5/5/2026
Delayed Acknowledgments5/5/2026
TCP Connection Termination5/5/2026
TCP Sequence Numbers5/4/2026
TCP Three-way Handshake5/4/2026
TCP Fast Retransmit5/4/2026
TCP Window Scale Option5/4/2026
TCP Packet Reordering5/4/2026
TCP Sliding Window5/4/2026
TCP Flow Control5/4/2026
So, what's UDP?5/4/2026
So, what's TCP?5/4/2026
TCP Congestion Control Goals5/4/2026
TCP Congestion Detection5/4/2026
TCP Flow Control Purpose5/4/2026
TCP Checksum Coverage5/4/2026
Network Layers5/4/2026
TCP Data Integrity5/4/2026
Double flushing?5/4/2026
Why even IP?5/4/2026
Broadcast vs Multicast5/4/2026
Multicast Group Membership5/4/2026
DNS Basic Function5/4/2026
TCP Service Model5/4/2026
TCP Reliability Mechanism5/4/2026
TCP Termination Process5/4/2026
Private to Public5/4/2026
OS OSI5/4/2026
Interning It5/4/2026
Lions and buffalos5/4/2026
random_insert5/4/2026
Opti-what?5/4/2026
Satisfy me!5/4/2026
Comparing your variants5/4/2026
What's statically wrong?5/4/2026
Can you list what's initialized?5/4/2026
Cache Coherence Optimization5/4/2026
Signal vs Broadcast5/4/2026
PML?5/4/2026
Speak the language.5/4/2026
Who can share?5/4/2026
Fragmentation 15/4/2026
Dealing with Fragmentation5/4/2026
Split segments5/4/2026
The cost of .bss5/4/2026
Base my bounds5/4/2026
Split Problems5/4/2026
Thinking of memory strategically5/4/2026
The fundemental page5/4/2026
Clean up the thread5/4/2026
More data more problems5/4/2026
What am I using to lock this?5/4/2026
isolcpu, taskset, pthread_setaffinity.5/4/2026
Condition Variable Purpose5/4/2026
Coin-toss iteration4/27/2026
All-even board4/27/2026
Same-Color Probability4/27/2026
Unbeaten Chess Streak4/27/2026
Committee Combinations4/27/2026
Password Permutations4/27/2026
How big is it?4/27/2026
Registering RAM4/27/2026
Warm and toasty4/27/2026
Instruction Set Categories4/27/2026
Machine Language Components4/27/2026
Memory Addressing Modes4/27/2026
Branch Instruction Types4/27/2026
Branch Instruction Effects4/27/2026
RISC Pipeline Structure4/27/2026
Pipeline Operation Basics4/27/2026
Cache Coherence 4/27/2026
Endian? Is that a word?4/27/2026
Single-Cycle Processor Limitations4/27/2026
Pipeline Performance Calculation4/27/2026
How does it mutex?4/27/2026
Yield!4/27/2026
Wake up!4/27/2026
Counter Thread Safety4/27/2026
The birth of the process4/27/2026
Uncontrolled scheduling4/27/2026
But how do it do?4/27/2026
The OS Monarch4/27/2026
Interrupting an interrupt.4/27/2026
After main()4/27/2026
Before main()4/27/2026
Process Control Block4/27/2026
Process States4/27/2026
It's our time!4/27/2026
System vs Procedure Call4/27/2026
Why an OS?4/27/2026
Interacting with the OS4/27/2026
What is a Software Thread?4/27/2026
How Many Page Translations?4/27/2026
Scheduler Trade-offs4/27/2026
Virtual Address Mask4/27/2026
You Dirty Bit.4/27/2026
If the OS is running...4/27/2026
Translate which address?4/27/2026
Memory Segmentation4/27/2026
Job Scheduling4/27/2026
Clock Replacement Algorithm4/27/2026
The Page Replacement Algorithm4/27/2026
LRU Replacement Policy4/27/2026
Page Table Present Bit4/27/2026
Page Fault Mechanism4/27/2026
Multi-level Page Tables4/27/2026
TLB Miss Handling4/27/2026
Virtual address structure4/27/2026
TLB Purpose4/27/2026
Condition Variable Atomicity4/27/2026
Producer-Consumer Signaling4/27/2026
Simple system call overhead4/27/2026
P switch T switch.4/27/2026
Where can I find you?4/27/2026
IPC mutex4/27/2026
System Initialization4/27/2026
Return from where?4/27/2026
Top of the stack4/27/2026
To Interrupt or To Poll4/1/2026
override!2/22/2026
Invoke me.2/22/2026
Case and point 11/10/2026
Case and point 21/10/2026
Processor Architectural Divisions1/10/2026
Clock Cycle and Pipeline Depth1/4/2026
Speedup1/4/2026
Future shock1/4/2026
2 variables 1 auto1/4/2026
Outcast11/10/2025
Lord of Dot11/10/2025
Forever single11/7/2025
Assign to what?11/7/2025
Regex? I know this word!11/7/2025
Regex? I know this word! 211/7/2025
I love big numbers11/7/2025
Yes, I know what a ... is11/7/2025
Printing the printer.10/21/2025
Metaclasses basics10/21/2025
Python 2.1110/21/2025
What's your name?10/21/2025
Know your math10/21/2025
When death strikes10/21/2025
Pepsi10/21/2025
Illogical Infinity10/21/2025
Type, enter, run10/21/2025
String is strange10/21/2025
If Christopher Nolan invented Python10/17/2025
What is their GPA?10/17/2025
Is the US in the EU?10/17/2025
Slothful __slots__10/17/2025
Truthy Falsey10/17/2025
Let's golf!10/17/2025
Hexagon10/17/2025
Switch hitter10/17/2025
Either lower or uppercase9/21/2025
Chiral9/6/2025
How well can you print?9/6/2025
get ref9/6/2025
get ref 29/6/2025
Let's get this party started.9/3/2025
The Loop's Last Laugh9/3/2025
A Loop Without A Loop6/6/2025
Allocation decisions6/6/2025
Where'd it go?6/6/2025
Observe Closely6/6/2025
Do-while...6/6/2025
It's unique, but is it big?6/6/2025
Comma'on!6/6/2025
Once or twice?6/4/2025
CTAD6/4/2025
Not this, again.6/4/2025
What even is a string?6/4/2025
__code__ Attributes6/4/2025
Generational Generator6/4/2025
Strings in Python6/4/2025
Object Instantiation6/4/2025
Python Overloading6/4/2025
**kwargs and kwargs6/4/2025
left or right?6/4/2025
[Grid[Grid]]6/4/2025
Give me a hint!6/4/2025
Duck Duck Goose6/4/2025
But when do it run?6/3/2025
GIL6/3/2025
The Python Memory Manager6/3/2025
Walrus6/3/2025
Scope the Scope6/3/2025
Memorize to Memoize6/3/2025
List in Function6/3/2025
type of { }6/3/2025
__future__6/3/2025
Simple math, right?6/3/2025
CPython id6/3/2025
frozenset vs set6/3/2025
Small Integer Caching6/3/2025
String Interpolation Shenanigans6/3/2025
Zip it 26/3/2025
A Number Walks Into a Base...6/3/2025
Inheritance in the Deep6/3/2025
Understand your environment6/2/2025
Wheel of misfortune6/2/2025
Sick wheels6/2/2025
Wheel file6/2/2025
Three by three6/2/2025
Cereal printer6/2/2025
Slash slash6/2/2025
Unpack the pops6/2/2025
Stringy Cereal6/2/2025
tuple vs list6/2/2025
Hash Collisions6/2/2025
sorted() vs sort()6/2/2025
So, where is 1,000 stored?6/2/2025
A Slice of Confusion6/2/2025
Inquisitive Inheritance6/2/2025
__eq__ implementation6/2/2025
Inquisitive Inheritance 26/2/2025
Zero Division Error6/2/2025
Plus Minus Sanity6/2/2025
Decorator Disaster6/2/2025
Set the Record Straight6/2/2025
My name is6/2/2025
Small Numbers5/12/2025
Take your place!5/12/2025
Min Minister5/12/2025
Dis Me5/12/2025
malloc outside pymalloc5/12/2025
Exception Unwinding5/12/2025
Default Arguments 5/12/2025
"Hello"5/12/2025
So, where is the list stored?5/12/2025
__doc__5/12/2025
So, where is X stored?5/12/2025
In Python...5/12/2025
What are __slots__?5/12/2025
Dunder Dunder Dunder5/12/2025
Make it pretty.5/12/2025
Is Python...?5/12/2025
Multiple Assignment5/12/2025
Shallow Copy5/12/2025
**args5/12/2025
Zip it5/12/2025
What are we replacing?5/12/2025
So, how big is X?5/12/2025
Simple Type5/12/2025
Default Floating Point5/12/2025
Import test.py5/12/2025
Zero Division, Error?5/12/2025

Favorite Questions

TitleStatusDate

Completed Quizzes

TitleScoreDate

Progress Overview