| 2247F | Paths on a Grid | | | unrated | 358 |
| 2209E | A Trivial String Problem | | | 2200 | 2k |
| 2203F | Binary Search with One Swap | | | 2600 | 457 |
| 2178G | deCH OR Dations | | | 2800 | 630 |
| 2110D | Fewer Batteries | | | 1700 | 8.8k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 1979D | Fixing a Binary String | | | 1800 | 8k |
| 1969F | Card Pairing | | | 3000 | 413 |
| 1968G1 | Division + LCP (easy version) | | | 1900 | 5.4k |
| 1968G2 | Division + LCP (hard version) | | | 2200 | 2.6k |
| 1950G | Shuffling Songs | | | 1900 | 6.3k |
| 1914G2 | Light Bulbs (Hard Version) | | | 2300 | 1.9k |
| 1895C | Torn Lucky Ticket | | | 1400 | 13.3k |
| 1827C | Palindrome Partition | | | 2600 | 1.8k |
| 1794E | Labeling the Tree with Distances | | | 2400 | 1.6k |
| 1743G | Antifibonacci Cut | | | 3000 | 381 |
| 1729G | Cut Substrings | | | 2100 | 2.6k |
| 1721E | Prefix Function Queries | | | 2200 | 2.7k |
| 1681D | Required Length | | | 1700 | 10.9k |
| 1671E | Preorder | | | 2100 | 3.3k |
| 1658E | Gojou and Matrix Game | | | 2500 | 1.3k |
| 1624E | Masha-forgetful | | | 2000 | 4.7k |
| 1569F | Palindromic Hamiltonian Path | | | 3000 | 493 |
| 1553B | Reverse String | | | 1300 | 15.6k |
| 1537E1 | Erase and Extend (Easy Version) | | | 1600 | 16.9k |
| 1536C | Diluc and Kaeya | | | 1500 | 16.3k |
| 1451C | String Equality | | | 1400 | 17.4k |
| 1393E1 | Twilight and Ancient Scroll (easier version) | | | 2800 | 482 |
| 1393E2 | Twilight and Ancient Scroll (harder version) | | | 3200 | 521 |
| 1360F | Spy-string | | | 1700 | 13.7k |
| 1223F | Stack Exterminable Arrays | | | 2600 | 2.3k |
| 1214D | Treasure Island | | | 1900 | 7.2k |
| 1182D | Complete Mirror | | | 2400 | 1k |
| 1129C | Morse Code | | | 2400 | 1k |
| 1051E | Vasya and Big Integers | | | 2600 | 1.3k |
| 1003F | Abbreviation | | | 2200 | 1.6k |
| 856B | Similar Words | | | 2300 | 653 |
| 835D | Palindromic characteristics | | | 1900 | 4.8k |
| 825F | String Compression | | | 2400 | 2.1k |
| 822E | Liar | | | 2400 | 1.2k |
| 718D | Andrew and Chemistry | | | 2900 | 550 |
| 650D | Zip-line | | | 2600 | 1.7k |
| 633C | Spy Syndrome 2 | | | 1900 | 3.4k |
| 633D | Fibonacci-ish | | | 2000 | 3.1k |
| 613E | Puzzle Lover | | | 3200 | 541 |
| 611D | New Year and Ancient Prophecy | | | 2000 | 2.8k |
| 542D | Superhero's Job | | | 2600 | 541 |
| 534F | Simplified Nonogram | | | 2400 | 556 |
| 533E | Correcting Mistakes | | | 1800 | 2.5k |
| 486E | LIS of Sequence | | | 2200 | 2.7k |
| 467D | Fedor and Essay | | | 2400 | 2.1k |
| 407D | Largest Submatrix 3 | | | 2700 | 837 |
| 356E | Xenia and String Problem | | | 3000 | 566 |
| 245H | Queries for Number of Palindromes | | | 1800 | 9.5k |
| 228C | Fractal Detector | | | 2000 | 563 |
| 126B | Password | | | 1700 | 26.1k |
| 79C | Beaver | | | 1800 | 2.1k |
| 28D | Don't fear, DravDe is kind | | | 2400 | 723 |