Virtual contest · solo
Hello 2026
11 problems · duration 3:00:00
Hit Start contest to begin the countdown. Problems below open in a new tab when you click them — close the tab when you're finished with a problem. Click ✓ next to a problem when you AC'd it on cf-mirror or CF.
| Idx | Name | Rating | Status |
|---|---|---|---|
| A | Binary Array Game | 800 | |
| B | Yet Another MEX Problem | 1100 | |
| C | War Strategy | 1500 | |
| D1 | Tree Coloring (Easy Version) | 1500 | |
| D2 | Tree Coloring (Hard Version) | 2100 | |
| E | LCM is Legendary Counting Master | 2100 | |
| F | Jumping Man | 2500 | |
| G | Snake Instructions | 3200 | |
| H | Minimise Cost | 3500 | |
| I1 | Pairs Flipping (Easy Version) | 3500 | |
| I2 | Pairs Flipping (Hard Version) | 3500 |