| 1300 |
| Solve |
| Strange Birthday Party | 1300 | Solve |
| String Transformation | 1300 | Solve |
| Strings of Power | 1300 | Solve |
| Strong Vertices | 1300 | Solve |
| Strongly Composite | 1300 | Solve |
| Students in Railway Carriage | 1300 | Solve |
| Subset Multiplication | 1300 | Solve |
| Substring Game in the Lesson | 1300 | Solve |
| Substring Removal | 1300 | Solve |
| Summarize to the Power of Two | 1300 | Solve |
| Summer sell-off | 1300 | Solve |
| Swords | 1300 | Solve |
| T-Shirt Hunt | 1300 | Solve |
| T-primes | 1300 | Solve |
| THU Packing Puzzle | 1300 | Solve |
| TV Subscriptions (Hard Version) | 1300 | Solve |
| Take Your Places! | 1300 | Solve |
| Tear It Apart | 1300 | Solve |
| The Bento Box Adventure | 1300 | Solve |
| The Child and Homework | 1300 | Solve |
| The Closest Pair | 1300 | Solve |
| The Forbidden Permutation | 1300 | Solve |
| The Text Splitting | 1300 | Solve |