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Victor MerckléVictor MerckléGrandmaster
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olliecrowolliecrowMaster
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Yuriy LyfenkoYuriy Lyfenko
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Apprentice600.00
Skilled3'300.00
Expert16'800.00
Master50'500.00
Grandmaster114'600.00
Dynamic · #1 player: 134'858.87 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 · 19 days ago
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 · 20 days ago
Danylo Mocherniuk
Doesn’t work for me neither.
by Danylo Mocherniuk on Using MMAP to optimize data reading · 21 days ago
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 · 22 days ago
Recent Submissions
View all →
Aleksei ShahoikaAleksei Shahoika→Large matrix multiplicationCPP
3 minutes ago		Success
Aleksei ShahoikaAleksei Shahoika→Large matrix multiplicationCPP
8 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
25 minutes ago		Success
Josu San MartinJosu San Martin→Unique stringsCPP
27 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
32 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
37 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
43 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
48 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
54 minutes ago		Success
Victor MerckléVictor Mercklé→Parse integersCPP
59 minutes ago		Success
Recent Solution Challenges
View all →
Victor MerckléVictor Mercklé→zielaj·Format integers
2 days ago		Pending
Victor MerckléVictor Mercklé-10.00→Josu San Martin·Unique strings
3 days ago		Solution Held
Victor MerckléVictor Mercklé→zielaj·Unique strings
3 days ago		Pending
wnwn-10.00→AnSa·Parse integers
3 days ago		Solution Held
Victor MerckléVictor Mercklé+2.41→Dominique Garmier-9.65·Sum of prime numbersgen
12 days ago		Solution Broken
Victor MerckléVictor Mercklé→zielaj·Sum of prime numbersgen
13 days ago		Solution Broken
Victor MerckléVictor Mercklé+1.65→zielaj-6.61·Sum of prime numbersgen
13 days ago		Solution Broken
Victor MerckléVictor Mercklé→zielaj·Sum of prime numbersgen
13 days ago		Solution Broken
Victor MerckléVictor Mercklé-10.00→zielaj·Sum of prime numbers
13 days ago		Solution Held
Yuriy LyfenkoYuriy Lyfenko+6.72→Josu San Martin-26.89·Parse integersgen
14 days ago		Solution Broken