‌

Welcome to WYKOJ!

Recent Solves

Time User Task Language
2026-03-28 17:37:41 s23f41 - Lee Tsun Yat A001 - Missing Integer C++
2026-03-28 14:24:54 s25f04 - Tam Shun Kan P107 - Leap Year II C++
2026-03-28 14:15:17 s25f04 - Tam Shun Kan C2201 - Sussy Rock C++
2026-03-27 21:24:53 s25f04 - Tam Shun Kan C2211 - Henry's Sprint C++
2026-03-27 21:14:41 s25f04 - Tam Shun Kan B021 - Birthday Present C++
2026-03-27 21:02:14 s25f04 - Tam Shun Kan B014 - Funny Number C++
2026-03-27 20:52:57 s25f04 - Tam Shun Kan A002 - Modular Arithmetic C++
2026-03-27 20:05:01 s25f04 - Tam Shun Kan Z2612 - Touch Grass C++
2026-03-27 19:22:26 s25f04 - Tam Shun Kan T252 - Attendance Check C++
2026-03-27 19:14:20 s25f04 - Tam Shun Kan T251 - Total Legs C++
2026-03-27 18:46:56 s25f04 - Tam Shun Kan T231 - Pass Ball Ball C++
2026-03-27 18:39:25 s25f04 - Tam Shun Kan T232 - Chocolate Coin Debt C++
Contests

Ongoing

WYHK 2026 Mini Contest 2 [Testing]
Ends in

Upcoming

WYOI Round 0 [April Edition]
Starts in
2026 Mini Comp 3
Starts in
News!

🎉 Frontend and Backend Migrated to New Server!
Took longer than expected due to funny error(s).

3 Sept 2025

🎉 New server (after ε years)!
Thanks @seadoglee and WYK for $$$. We expect down time to be much less than before. Thank you everyone for your continue support of WYKOJ.

5 Jul 2025

Useful Links
Other Pages
HKOI
Resources
Editors / IDEs