| 1 | Easy Diameter Problem |
| 2 | The Game |
| 3 | Randias Permutation Task |
| 4 | Period of a String |
| 5 | Sugar Sweet II |
| 6 | Mysterious Tree |
| 7 | Card Game |
| 8 | Master of Both V |
| 9 | Bingo |
| 10 | Challenge NPC |
| 11 | Permutation |
| 12 | Sugar Sweet 3 |
| 13 | Challenge Matrix Multiplication |
| 14 | Defeat the Enemies |
| 15 | The Story of Emperor Bie |
| 16 | Mah-jong |
| 17 | LR String |
| 18 | Yearning for Yonder |
| 19 | Challenge Matrix Multiplication II |
| 20 | Basic Counting Practice Problems |
| 21 | Diameter of a Tree |
| 22 | Challenge NPC II |
| 23 | Plus Xor |
| 24 | Dumb Problem II |
| 25 | Replacement |
