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#1
Victor MerckléVictor MerckléGrandmaster
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Josu San MartinJosu San MartinMaster
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olliecrowolliecrowMaster
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Yuriy LyfenkoYuriy Lyfenko
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limanjun99limanjun99
Expert43'657.72
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10
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Expert35'247.97
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zielajzielaj
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Apprentice900.00
Skilled4'800.00
Expert24'000.00
Master72'200.00
Grandmaster163'600.00
Dynamic · #1 player: 192'541.19 RP
News
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!

2024-11-10

New supported language Zig was added.

2024-08-31

The checker server’s OS has been upgraded to Ubuntu 24.04.

View all news →
Recent Articles
zielaj
Parse integers task: memory access pattern
by zielaj · Apr 23, 2026
7Sergey Svistunov
Using MMAP to optimize data reading
by Sergey Svistunov · Apr 19, 2026
3
Recent Discussions
Sergey Svistunov
I’ve just tuned a little bit the server, MAP_HUGETLB should work now.
by Sergey Svistunov on Using MMAP to optimize data reading · Apr 24, 2026
zielaj
FYI This is a republishing an article that I originally sent to the telegram channel pre-upgrade.
by zielaj on Parse integers task: memory access pattern · Apr 23, 2026
Danylo Mocherniuk
Doesn’t work for me neither.
by Danylo Mocherniuk on Using MMAP to optimize data reading · Apr 23, 2026
zielaj
Does MAP_HUGETLB work for anyone on highload.fun? I remember trying it a long time ago on “Parse...
by zielaj on Using MMAP to optimize data reading · Apr 21, 2026
Recent Submissions
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A_ShamanA_Shaman→Cross-Margin Liquidation EngineCPP
3 minutes ago		Success
Victor MerckléVictor Mercklé→Unique stringsCPP
3 minutes ago		Success
A_ShamanA_Shaman→Cross-Margin Liquidation EngineCPP
6 minutes ago		Success
Victor MerckléVictor Mercklé→Unique stringsCPP
8 minutes ago		Success
A_ShamanA_Shaman→Count uint8CPP
9 minutes ago		Success
A_ShamanA_Shaman→Count uint8CPP
12 minutes ago		Success
A_ShamanA_Shaman→Count uint8CPP
15 minutes ago		Success
A_ShamanA_Shaman→Count uint8CPP
17 minutes ago		Success
Victor MerckléVictor Mercklé→Unique stringsCPP
18 minutes ago		Success
A_ShamanA_Shaman→Count uint8CPP
19 minutes ago		Success
Recent Solution Challenges
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highloadLLMhighloadLLM-10.00→Victor Mercklé·Order book
10 days ago		Pending
highloadLLMhighloadLLM-10.00→Victor Mercklé·Cross-Margin Liquidation Engine
13 days ago		Solution Held
Josu San MartinJosu San Martin-21.44→Dmtry·Order book
19 days ago		Solution Held
Josu San MartinJosu San Martin-10.00→Dmtry·Order book
19 days ago		Solution Held
Josu San MartinJosu San Martin+41.84→Jem Bishop-167.36·Order book
19 days ago		Solution Broken
Josu San MartinJosu San Martin+45.62→Jem Bishop-182.49·Order book
20 days ago		Solution Broken
Josu San MartinJosu San Martin+485.52→Aniruddha Deb-1'942.08·Order book
20 days ago		Solution Broken
Josu San MartinJosu San Martin+5.94→Jem Bishop-23.74·Order book
20 days ago		Solution Broken
Josu San MartinJosu San Martin+11.02→Jem Bishop-44.07·Order book
20 days ago		Solution Broken
Josu San MartinJosu San Martin+101.95→Aniruddha Deb-407.79·Order book
20 days ago		Solution Broken