Recently Published Sources
2026 POSTECH Programming Contest (PPC) ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | POSTECH26PPC_A | 날아라 포닉스 Batch | 4 | |
| 2 | POSTECH26PPC_B | Classical POSTECH Problem Batch | 3 | |
| 3 | POSTECH26PPC_C | Classical Interactive Problem Interactive | 4 | |
| 4 | POSTECH26PPC_D | 포닉스의 학점은? Batch | 4 | |
| 5 | POSTECH26PPC_E | 학교를 쌓아올리는 포닉스 Batch | 4 | |
| 6 | POSTECH26PPC_F | 정산 Batch | 4 | |
| 7 | POSTECH26PPC_G | XOR Bitshift (Hard) Batch | 1 | |
| 8 | POSTECH26PPC_H | POSTECH Programming Colosseum Batch | 4 | |
| 9 | POSTECH26PPC_I | 오와 열 Batch | 3 | |
| 10 | POSTECH26PPC_J | 부분수열의 개수 Batch | 4 | |
| 11 | POSTECH26PPC_K | 포스텍 도수체조 Batch | 4 | |
| 12 | POSTECH26PPC_L | Last Dance Batch | 2 |
APIO 2026 Practice Session ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | APIO26_nightmarket | Night Market Batch | 2 | |
| 2 | APIO26_ancient | Ancient Ruins Excursion Interactive Communication | 1 | |
| 3 | APIO26_apio | This is APIO, not APOI Interactive Communication | 2 | |
| 4 | APIO26_game | Communication Game Interactive Communication | 2 |
APIO 2026 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | APIO26_bike | APIOBike Batch | 2 | |
| 2 | APIO26_navigation | Navigation Interactive Communication | 3 | |
| 3 | APIO26_party | Scallion Pancake Party Interactive Communication | 8 |
2017 JOI Spring Training Camp/Qualifying Trial Day 4 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | JOI17_abduction2 | Abduction 2 Batch | 81 | |
| 2 | JOI17_city | City Two steps | 60 | |
| 3 | JOI17_dragon2 | Dragon 2 Batch | 52 |
2026 KAIST RUN Spring Contest ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | KAISTRUN26SPRING_A | Second Run Batch | 9 | |
| 2 | KAISTRUN26SPRING_B | RUN Sequence Batch | 11 | |
| 3 | KAISTRUN26SPRING_C | Dubai Chewy Cookie Batch | 8 | |
| 4 | KAISTRUN26SPRING_D | Grilled Bottle Batch | 10 | |
| 5 | KAISTRUN26SPRING_E | Kirameki of Revue Batch | 6 | |
| 6 | KAISTRUN26SPRING_F | Pragmatism Batch | 4 | |
| 7 | KAISTRUN26SPRING_G | AiScReam Interactive | 0 | |
| 8 | KAISTRUN26SPRING_H | Hawaiki Batch | 2 | |
| 9 | KAISTRUN26SPRING_I | Wizdomiot Batch | 1 |
2026 JOI Spring Training Camp/Qualifying Trial Day 4 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | JOI26_baker | Baker Batch | 8 | |
| 2 | JOI26_festival | Festivals in JOI Kingdom 3 Batch | 1 | |
| 3 | JOI26_voltage | Voltage 2 Batch | 15 |
2026 JOI Spring Training Camp/Qualifying Trial Day 3 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | JOI26_rainfall | Triangular Rainfall Batch | 2 | |
| 2 | JOI26_scarecrows | Scarecrows 2 Batch | 6 | |
| 3 | JOI26_stamps | Collecting Stamps 5 Batch | 10 |
2026 JOI Spring Training Camp/Qualifying Trial Day 2 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | JOI26_casino | Casino Interactive Communication | 29 | |
| 2 | JOI26_joitour | JOI Tour 2 Batch | 4 | |
| 3 | JOI26_teleporter | Teleporter 2 Batch | 15 |
2026 JOI Spring Training Camp/Qualifying Trial Day 1 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | JOI26_dango | Legendary Dango Eater Batch | 17 | |
| 2 | JOI26_garden | Garden 3 Batch | 12 | |
| 3 | JOI26_multi | Multi Communication 2 Interactive Communication | 3 |
Croatian Olympiad in Informatics 2024 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | COI24_cern | CERN Batch | 5 | |
| 2 | COI24_koreografija | Koreografija Interactive | 2 | |
| 3 | COI24_ministarstvo | Ministarstvo Batch | 5 | |
| 4 | COI24_sirologija | Sirologija Batch | 2 |
