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Victor MerckléVictor MerckléGrandmaster
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olliecrowolliecrowExpert
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Dynamic · #1 player: 289'784.55 RP
News
2026-08-08

A new computed task Group by sum was published

2026-06-27

🚀 New challenge type: Server Competitions! Until now you’ve optimized programs - now you optimize whole servers. Our first one is live: Auth Server. Build an HTTP authentication server, package it as a Docker image, and docker push it  to our registry - every push is automatically benchmarked against a freshly generated, hidden dataset, so there’s nothing to overfit. Lowest total request time wins. Grab the API spec and climb the leaderboard!

2026-04-29

🎉5 years of HighLoad.Fun!🎉 Half a decade ago, the domain was registered - and what started as an idea has grown into a community of engineers obsessed with squeezing every last nanosecond out of their code. Thanks for being here.

2026-01-01

The 2025 leaderboard is officially closed! Explore the final results by visiting this link. Share your certificates proudly—they will stay available as long as the site is live!

2025-01-01

The 2024 leaderboard is officially closed! Explore the final results by visiting this link. Share your certificates proudly—they will stay available as long as the site is live!

View all news →
Recent Articles
zielaj
Parse integers task: memory access pattern
by zielaj · Apr 23, 2026
9Sergey Svistunov
Using MMAP to optimize data reading
by Sergey Svistunov · Apr 19, 2026
4
Recent Discussions
wn
I have a lot of cool stuff in my code, like loop unrolling, fancy compiler flags, prefetching,...
by wn on Parse integers · 1 day ago
Tony
Oopps sorry I pasted the table, I didn’t realise it would render like this.
by Tony on Parse integers · 2 days ago
Tony
Your run is # Date Score Wall Time CPU User CPU System Memory Error 1 Jul 7, 2026 05:29 3,292...
by Tony on Parse integers · 2 days ago
wn
“goes through the data is somehow slower.” What are you comparing slower with? My solution?
by wn on Parse integers · 3 days ago
Tony
What I mean is that even this trivial version that does not answer the problem but goes through the...
by Tony on Parse integers · 3 days ago
Recent Submissions
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Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
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Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Andrew TsibinAndrew Tsibin→Group by sumRUST
4 hours ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
4 hours ago		Success
Recent Solution Challenges
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Kevin HeaveyKevin Heavey→wn·Parse integersgen
20 days ago		Solution Broken
Kevin HeaveyKevin Heavey→wn·Parse integersgen
20 days ago		Solution Broken
Kevin HeaveyKevin Heavey→wn·Parse integersgen
20 days ago		Solution Broken
Kevin HeaveyKevin Heavey→wn·Parse integersgen
20 days ago		Solution Broken
Kevin HeaveyKevin Heavey-10.00→wn·Parse integersgen
27 days ago		Solution Held
wnwn-10.00→Kevin Heavey·Parse integersgen
27 days ago		Solution Held
wnwn+9.22→Kevin Heavey-36.89·Parse integersgen
27 days ago		Solution Broken
Kevin HeaveyKevin Heavey-10.00→wn·Parse integersgen
28 days ago		Solution Held
Kevin HeaveyKevin Heavey-20.00→wn·Parse integersgen
28 days ago		Solution Held
wnwn-10.00→Victor Mercklé·Parse integersgen
Jul 10, 2026		Solution Held