Problems
| # | Problem | Link |
|---|---|---|
| A | Powering the Hero | Link |
| B | You Are So Beautiful | Link |
| C | Registration System | Link |
| D | Andryusha and Socks | Link |
| E | Unique Elements | Link |
| F | Anton and Letters | Link |
| G | Restoring Password | Link |
| H | Balanced Tunnel | Link |
| I | Train and Queries | Link |
| J | Pangram | Link |
| K | Lecture | Link |
| L | Laptops | Link |
| M | Same Differences | Link |
| N | Enemy is weak | Link |
| O | Chat Order | Link |
| P | Misha and Changing Handles | Link |
Session Tutorial
Learn the concepts needed to solve these problems.
Sheet Editorial
Solutions and explanations for all problems.