Virtual contest · solo
Codeforces Round 640 (Div. 4)
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 | Sum of Round Numbers | 800 | |
| B | Same Parity Summands | 1200 | |
| C | K-th Not Divisible by n | 1200 | |
| D | Alice, Bob and Candies | 1300 | |
| E | Special Elements | 1500 | |
| F | Binary String Reconstruction | 1500 | |
| G | Special Permutation | 1600 |