therickyzhang
Infinite Loop
Bug Hunter OG Trusted
The clock is round in both directions
float MAX RANK
540,028 POWER LEVEL
Activity
524 submissions in 2026
Jan
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May
Jun
Jul
Aug
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Difficulty Breakdown
36 problems solved
Recent Activity
Solves, roadmap & quizzes
Last Line of Defense Jun 14, 06:49 PM
Domain Correct
Four Fields Jun 14, 06:49 PM
Domain Correct
TCP vs UDP Jun 14, 06:48 PM
Domain Correct
TCP Full Duplex Jun 14, 06:48 PM
Domain Correct
Window Scale Option Jun 14, 06:48 PM
Domain Correct
TCP Keepalive Jun 14, 06:43 PM
Domain Correct
MSS and MTU Jun 14, 06:43 PM
Domain Correct
Thrash out Jun 14, 06:42 PM
Domain Correct
Two levels is better than one Jun 13, 04:55 PM
Domain Correct
It's all your fault. Jun 13, 04:55 PM
Domain Correct
Stacked up (Easy Version) Jun 12, 01:01 AM
Core AC
Stacked up (Easy Version) Jun 12, 01:00 AM
Core AC
Stacked up (Easy Version) Jun 12, 12:53 AM
Core WA
Stacked up (Easy Version) Jun 12, 12:41 AM
Core WA
Stacked up (Easy Version) Jun 12, 12:40 AM
Core CE
Stacked up (Easy Version) Jun 12, 12:40 AM
Core CE
Stacked up (Easy Version) Jun 12, 12:39 AM
Core WA
TCP vs UDP: When to Choose TCP Jun 8, 01:28 AM
Domain Correct
TCP Retransmission Jun 8, 01:28 AM
Domain Correct
TCP Header Flags Jun 8, 01:27 AM
Domain Correct
Best Solves
Hardest problems solved
#1
Glitched 11
Stacked up (Hard Version)
#2 Grandmaster 10
Consumerism (Hard version)
#3 Master 9.5
Stacked up (Easy Version)
#4 Master 9
Consumerism (Easy version)
#5 Expert 8
Pool party!
#6 Insane 7.5
Return to Sender
#7 Harder 6
Let's Connect! (Hard version)
#8 Harder 6
I'm single.
#9 Hard 5
We were all SYNners.
#10 Hard 5
One, Two, Skip a few...