Virtual contest · solo
Codeforces Global Round 31 (Div. 1 + Div. 2)
10 problems · duration 2:30:00
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 | Carnival Wheel | 800 | |
| B | Ashmal | 800 | |
| C | XOR-factorization | 1900 | |
| D | Insolvable Disks | 1900 | |
| E | No Effect XOR | 2300 | |
| F1 | Control Car (Easy Version) | 2800 | |
| F2 | Control Car (Hard Version) | 3200 | |
| G | Balance | 3500 | |
| H1 | Bug Is Feature (Unconditional Version) | 3400 | |
| H2 | Bug Is Feature (Conditional Version) | 3500 |