Another year, another TST.
Now that I'm in university, I can "accidentally" "forget" to go to school, so expect scoreboard streams from the very beginning this time around. Still autistic as ever.
Top 32 in Vietnamese Olympiad in Informatics 2026 + APIO25 contestants who are still eligible for this year will compete in 2 competition days. Top 15 progresses to APIO.
IOI26 selection score = TST26 Day1 score + TST26 Day2 score + APIO26 score. Top 4 contestants will be Vietnam's representatives for IOI26 should things not go wrong
List of participants: https://docs.google.com/spreadsheets/d/1l0dEH-Viujw4NpRuyn9HF4KVxgJ-jDi5HKV60UFJLc8/edit?gid=594021204#gid=594021204
Full problemset (based on contestant's recollections, no submit): here
Contest schedule:
Day 0 (Equipment testing): 25/03/2026
Day 1 (Competition Day 1): 26/03/2026 (08:00 GMT+7 — 13:00 GMT+7)
Day 2 (Competition Day 2): 27/03/2026 (08:00 GMT+7 — 13:00 GMT+7)
Note cho những người muốn đến hóng scoreboard trực tiếp: Khác với các năm trước (ít nhất từ 2017), do UET đã hoàn thành công cuộc cải tổ gì đấy nên địa điểm thi (và xem live scoreboard) không còn ở G2 VNU nữa. Địa điểm thi đã được chuyển sang tòa E2 của VNU (hình ảnh ở đây). Scoreboard sẽ được chiếu ở phòng 212 E2
Links:
Discussion thread on VNOI Discord: https://discord.com/channels/660930260405190688/1006418260637528065/threads/1485570568357941339
Day 1 scoreboard:
Day 1 Livestream + Commentary: here
Day 1 Livestream + Commentary (gsPVH version): here
Day 1 Problemset (Contestant's recollections): here
You can upsolve the Day1 problems here: [To be added in 2027, soonTM]
Day 2 scoreboard:
Day 2 Livestream + Commentary: here
Day 2 Livestream + Commentary (gsPVH version): here
Day 2 problemset (contestants' recollections, unofficial tests): See above
Note that this year's competition for IOI would be especially rough. Normally, we'd only have 1-2 especially dominating candidates that most likely will go to IOI should things not go wrong (examples of "things goes wrong" includes APIO24's Magic Shitshow). The rest are wildcards that may lucksack and win the competition by surprise, or flopped like hell for no particular reason whatsoever.
However, this year around, out of the 38 contestants, the lineup consists of the following highly notable individuals:
Nguyen Phu Nhan (SmuggingSpon): IOAI25 Gold Medalist
Nguyen Huu Tuan (ahihi1234): IOI24 Silver Medalist, IOAI25 Gold Medalist, first Vietnamese 10th grader to qualify for IOI
Nguyen Viet Trung Nhan (nathan4690): IOAI25 Gold Medalist
Nguyen Khanh Phuc (I_love_Khanh_Dan): Youngest Vietnamese GM + a bunch of other insane shit never done before
Dang Huy Hau (i_love_huyhau6a2): IOI25 Silver Medalist, second Vietnamese 10th grader to qualify for IOI
Nguyen Bui Duc Dung (EtherStrike): IOI25 Silver Medalist
Thieu Nguyen Huy (tnhwe): #3 in Vietnamese TST25
Nguyen Xuan Chi Thanh (Thanhs): #4 in Vietnamese TST25
Nguyen Huy Phong (modwwe): APIO25 Bronze Medalist
.......and at least 20 other wildcards.
This will be the biggest bloodbath for IOI in the VNOI community in the past 15 years, and I am...very much hyped for it
Personal horse betting for top 6 after 2 competition days, purely based on familiarity with no logical backing whatsoever:
1st: I_love_Khanh_Dan
2nd: i_love_huyhau6a2
3rd: ahihi1234
4th: EtherStrike
5th: modwwe
6th: SmuggingSpon
why is everyone named Nguyen
Same situation with the Kims, I suppose
I don't know, but what's so special about Vietnam? I mean, like if we write blog like this for every country's tst, then what will happen? I mean, what's the point of posting this on cf?
For the collective consciousness to laugh together at the
Pretty decent and challenging problems
"oh GOD they are copy pasting research papers again" problem
some impossible bullshit around as bullshit as those 0ACs intentionally bullshit JOISC or the average CTSC problem
Bro, TsT 2026 will be held on March 26 and March 27...
I support you my goat
Da 36 lai con 67
Scam vua thoi em yeu
ok noted
we do operate on our own schedule after all
Auto comment: topic has been updated by Down_bad_4_haiender288 (previous revision, new revision, compare).
Auto comment: topic has been updated by Down_bad_4_haiender288 (previous revision, new revision, compare).
will there be livestream
yes
already updated
Scoreboard at 01:00
holy shti
ahihi1234 just went from 0 to 80 in less than a minute
Scoreboard at 02:00
Scoreboard at 02:00
Problem 1 has been conquered at 02:23
Problem 3 has been conquered after 02:45 of very low activity from I_love_Khanh_Dan
Scoreboard at 03:00
Problem 2 has been conquered by SmuggingSpon at 03:35. All three Day1 problems has been conquered by at least one contestant
Scoreboard at 04:00. Two more ACs of P1 has been made
04:30
04:45
Problem 4 has been conquered by i_love_huyhau6a2 at 00:50
Problem 5 has been conquered by I_love_Khanh_Dan at 01:13
Scoreboard at 02:20
03:05
)
04:00
04:30
04:45