Virtual contest · solo
XIX Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules)
4 problems · duration 5:00:00
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 | Alice, Bob, And Two Arrays | 3300 | |
| B | Arithmetic Exercise | 2600 | |
| C | Dreaming Is Not Harmful | 2300 | |
| D | Cute Subsequences | 1800 |