therickyzhang

Infinite Loop

Bug Hunter OG Trusted

The clock is round in both directions

double I Rank

623,478 Power level

double I → double II

14,771 / 17,345 XP

2,574 XP to double II

#7 Rank 37 Solved 100% Accuracy 295 Quiz solved 84% Quiz acc. 30 Roadmap solved 17 Streak

Activity

249 activity events in 2026

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Difficulty Breakdown

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Recent Activity

Solves, roadmap, White Room, quests & quizzes

2 quiz questions Sep 23, 08:37 AM

Domain · Correct · Fourteen Thousand Frames Deep, Two Pages Of Copying

Subarray Sum Queries II Sep 11, 04:33 PM

Quest · Completed

3122. Minimum Number of Operations to Satisfy Conditions Sep 11, 04:33 PM

Quest · Completed

I'm single. Sep 8, 04:52 AM

Core · CE · C++23 · 2842 ms

4 quiz questions Aug 30, 11:49 PM

Domain · Correct · Exactly Thirty Two Kilobytes, Sixty Four Is Too Big and 2 more

ABC457 E. Crossing Table Cloth Aug 30, 11:36 PM

Quest · Completed

3030. Find the Grid of Region Average Aug 30, 11:36 PM

Quest · Completed

ABC409 I. Connecting Points Aug 30, 11:36 PM

Quest · Completed

2 quiz questions Aug 30, 11:36 PM

Domain · Correct · Four Bits Of History, Misprediction Slowdown

It Scaled On My Laptop Aug 30, 11:13 PM

Domain · Correct

3 quiz questions Aug 30, 10:55 PM

Domain · Correct · Eight Useful Bytes, Four Counters One Line and 1 more

Split Aug 30, 10:37 PM

Domain · Correct

The Compiler Will Not Reassociate Aug 30, 09:58 PM

Domain · Correct

2 quiz questions Aug 30, 09:35 PM

Domain · Correct · Shared Memory Separate Descriptors, Two Saves One Switch

2 quiz questions Aug 30, 08:44 PM

Domain · Correct · Two Defunct Rows, Installing Your Own Trap

2 quiz questions Aug 30, 07:19 PM

Domain · Correct · Cold Resume, One Byte Per Syscall

3250. Find the Count of Monotonic Pairs I Jul 12, 07:35 PM

Quest · Completed

Tree Distances I Jul 12, 07:35 PM

Quest · Completed

Pardon my... Jul 12, 07:32 PM

Core · AC · C++23 · 17 ms

The NOexistenceN of you AND me Jul 12, 07:32 PM

Quest · Completed

Best Solves

Hardest problems solved

Stacked up (Hard version)

C++23 +477 XP +23,097 PL

ConcurrencyData StructuresMemory ManagementOperating Systems

Consumerism (Hard version)

C++23 +420 XP +20,343 PL

Data StructuresMemory ManagementDesign PatternsOperating Systems

Stacked up (Easy version)

C++23 +334 XP +16,185 PL

ConcurrencyData StructuresOperating Systems

Consumerism (Easy version)

C++23 +440 XP +21,310 PL

Data StructuresDesign PatternsOperating SystemsConcurrency

C++23 +379 XP +18,361 PL

Data StructuresDesign PatternsMemory ManagementOperating Systems

Return to Sender

C++23 +248 XP +12,023 PL

Let's Connect! (Hard version)

C++23 +224 XP +10,860 PL

MathGame Theory

C++23 +224 XP +10,860 PL

ConcurrencyData StructuresDesign PatternsOperating Systems

C++23 +155 XP +7,518 PL

Data StructuresMemory ManagementOperating Systems

We were all SYNners.

C++23 +183 XP +8,874 PL