Virtual contest · solo
Codeforces Round 861 (Div. 2)
7 problems · duration 2:00:00
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 | Lucky Numbers | 900 | |
| B | Playing in a Casino | 1200 | |
| C | Unlucky Numbers | 1900 | |
| D | Petya, Petya, Petr, and Palindromes | 2100 | |
| E1 | Minibuses on Venus (easy version) | 2200 | |
| E2 | Minibuses on Venus (medium version) | 2500 | |
| E3 | Minibuses on Venus (hard version) | 2800 |