Recently Published Sources
IOI 2026 Day 2 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | IOI26_classroom | Classroom Game Two steps | 7 | |
| 2 | IOI26_magiccity | Magic City Batch | 12 | |
| 3 | IOI26_partition | Partition Two steps | 7 |
IOI 2026 Day 0 (Practice) ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | IOI26_aplusb | A + B Queries Batch | 15 | |
| 2 | IOI26_bitstrings | Duplicated Binary Strings Batch | 6 | |
| 3 | IOI26_boringgame | Boring Game Interactive | 3 | |
| 4 | IOI26_magic | Magic Trick Interactive Communication | 4 |
IOI 2026 Day 1 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | IOI26_ballmachine | Ball Machine Interactive Communication | 13 | |
| 2 | IOI26_monuments | Monuments Batch | 17 | |
| 3 | IOI26_tiling | Tiling Game Interactive Communication | 124 |
EGOI 2026 Day 2 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | EGOI26_wateringplants | Watering Plants Batch | 7 | |
| 2 | EGOI26_cakes | Cakes Batch | 9 | |
| 3 | EGOI26_foxfamilies | Fox Families Batch | 2 | |
| 4 | EGOI26_seatingplan | Seating Plan Interactive | 2 |
EGOI 2026 Day 1 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | EGOI26_ferriswheel | Ferris Wheel Batch | 17 | |
| 2 | EGOI26_ovenmasters | Ovenmasters Batch | 6 | |
| 3 | EGOI26_biscuits | Biscuits Batch | 1 |
Baltic Olympiad in Informatics 2026 Day 1 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | BOI26_blocks | Blocks Batch | 8 | |
| 2 | BOI26_island | Island Batch | 6 | |
| 3 | BOI26_journey | Tourist's Journey Batch | 5 |
CEOI 2026 Day 2 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 4 | CEOI26_flowers | Flower Cutting Batch | 23 | |
| 5 | CEOI26_towers | Towers Batch | 18 | |
| 6 | CEOI26_vim | Vim Batch | 3 |
CEOI 2026 Day 1 ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | CEOI26_birdwatchers | Birdwatchers Batch | 3 | |
| 2 | CEOI26_dfs | DFS Batch | 31 | |
| 3 | CEOI26_hunt | Treasure Hunt Batch | 1 |
2026 POSTECH Programming Contest (PPC) ()
| # | Alias | Your score | Title | Solved # |
|---|---|---|---|---|
| 1 | POSTECH26PPC_A | 날아라 포닉스 Batch | 6 | |
| 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 | 5 | |
| 6 | POSTECH26PPC_F | 정산 Batch | 4 | |
| 7 | POSTECH26PPC_G | XOR Bitshift (Hard) Batch | 1 | |
| 8 | POSTECH26PPC_H | POSTECH Programming Colosseum Batch | 5 | |
| 9 | POSTECH26PPC_I | 오와 열 Batch | 3 | |
| 10 | POSTECH26PPC_J | 부분수열의 개수 Batch | 5 | |
| 11 | POSTECH26PPC_K | 포스텍 도수체조 Batch | 4 | |
| 12 | POSTECH26PPC_L | Last Dance Batch | 2 |
