| 2244A | Iskander and Drawings | | | unrated | 26.5k |
| 2244E | Masha and the Garland | | | unrated | 7.6k |
| 2196D | Double Bracket Sequence | | | 2500 | 1.1k |
| 2190B1 | Sub-RBS (Easy Version) | | | 1400 | 11.5k |
| 2178B | Impost or Sus | | | 900 | 22.4k |
| 2121E | Sponsor of Your Problems | | | 1500 | 15.1k |
| 2104E | Unpleasant Strings | | | 1700 | 8.3k |
| 2008E | Alternating String | | | 1500 | 13.8k |
| 1996C | Sort | | | 1200 | 28.5k |
| 1979D | Fixing a Binary String | | | 1800 | 8k |
| 1971D | Binary Cut | | | 1100 | 31k |
| 1941C | Rudolf and the Ugly String | | | 900 | 39.8k |
| 1930D1 | Sum over all Substrings (Easy Version) | | | 1800 | 4.9k |
| 1930D2 | Sum over all Substrings (Hard Version) | | | 2100 | 3.1k |
| 1924A | Did We Get Everything Covered? | | | 1500 | 17k |
| 1862A | Gift Carpet | | | 800 | 36.6k |
| 1845C | Strong Password | | | 1400 | 17.1k |
| 1841C | Ranom Numbers | | | 1800 | 9.2k |
| 1821E | Rearrange Brackets | | | 2100 | 2.8k |
| 1789F | Serval and Brain Power | | | 2700 | 1k |
| 1750E | Bracket Cost | | | 2400 | 1.7k |
| 1714D | Color with Occurrences | | | 1600 | 10.5k |
| 1701E | Text Editor | | | 2500 | 1.4k |
| 1660C | Get an Even String | | | 1300 | 22.3k |
| 1584F | Strange LCS | | | 2600 | 1.2k |
| 1562E | Rescue Niwen! | | | 2500 | 1.6k |
| 1553D | Backspace | | | 1500 | 15.3k |
| 1537E1 | Erase and Extend (Easy Version) | | | 1600 | 16.9k |
| 1535C | Unstable String | | | 1400 | 17.9k |
| 1506G | Maximize the Remaining String | | | 2000 | 4.9k |
| 1466C | Canine poetry | | | 1300 | 18.9k |
| 1451B | Non-Substring Subsequence | | | 900 | 20.3k |
| 1451C | String Equality | | | 1400 | 17.4k |
| 1422E | Minlexes | | | 2700 | 912 |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1315B | Homecoming | | | 1300 | 9.7k |
| 1295C | Obtain The String | | | 1600 | 14k |
| 1285D | Dr. Evil Underscores | | | 1900 | 8.7k |
| 1202C | You Are Given a WASD-string... | | | 2100 | 2.8k |
| 1131E | String Multiplication | | | 2300 | 1.3k |
| 1037C | Equalize | | | 1300 | 20.2k |
| 979D | Kuro and GCD and XOR and SUM | | | 2200 | 2.3k |
| 965E | Short Code | | | 2200 | 2k |
| 766C | Mahmoud and a Message | | | 1700 | 5k |
| 758D | Ability To Convert | | | 2000 | 3k |
| 665C | Simple Strings | | | 1300 | 18.5k |
| 645E | Intellectual Inquiry | | | 2200 | 1.4k |
| 615C | Running Track | | | 2000 | 2.5k |
| 552E | Vanya and Brackets | | | 2100 | 1.8k |
| 550A | Two Substrings | | | 1500 | 44.4k |
| 533E | Correcting Mistakes | | | 1800 | 2.5k |
| 79C | Beaver | | | 1800 | 2.1k |
| 5C | Longest Regular Bracket Sequence | | | 1900 | 18.8k |