| 2242E | Product of Closures | | | 2200 | 1.4k |
| 2217F | Interval Game | | | 2300 | 885 |
| 2203B | Beautiful Numbers | | | 1000 | 16.2k |
| 2203C | Test Generator | | | 1500 | 7.9k |
| 2182F2 | Christmas Reindeer (hard version) | | | 2500 | 1.1k |
| 2180E | No Effect XOR | | | 2300 | 1.8k |
| 2179D | Blackslex and Penguin Civilization | | | 1300 | 14.1k |
| 2173D | Taiga's Carry Chains | | | 1900 | 3.8k |
| 2171G | Sakura Adachi and Optimal Sequences | | | 2000 | 2.4k |
| 2170A | Maximum Neighborhood | | | 800 | 20.6k |
| 2165C | Binary Wine | | | 2000 | 5k |
| 2157G | Isaac's Queries | | | 2800 | 672 |
| 2119A | Add or XOR | | | 800 | 27.7k |
| 2118C | Make It Beautiful | | | 1300 | 19k |
| 2115D | Gellyfish and Forget-Me-Not | | | 2900 | 2.1k |
| 2109B | Slice to Survive | | | 1200 | 17.8k |
| 2108B | SUMdamental Decomposition | | | 1300 | 14.9k |
| 2086E | Zebra-like Numbers | | | 2400 | 1.7k |
| 2074F | Counting Necessary Nodes | | | 2000 | 2.5k |
| 2061E | Kevin and And | | | 2000 | 4.1k |
| 2057C | Trip to the Olympiad | | | 1500 | 14.1k |
| 2040C | Ordered Permutations | | | 1600 | 11k |
| 2020A | Find Minimum Operations | | | 800 | 26.2k |
| 1994B | Fun Game | | | 1100 | 19.8k |
| 1994E | Wooden Game | | | 2000 | 5.7k |
| 1991D | Prime XOR Coloring | | | 1900 | 8k |
| 1981C | Turtle and an Incomplete Sequence | | | 1800 | 6.4k |
| 1977B | Binary Colouring | | | 1100 | 20.1k |
| 1973B | Cat, Fox and the Lonely Array | | | 1300 | 17.1k |
| 1956D | Nene and the Mex Operator | | | 2000 | 4.9k |
| 1936A | Bitwise Operation Wizard | | | 1700 | 8.8k |
| 1935E | Distance Learning Courses in MAC | | | 2400 | 1.7k |
| 1929E | Sasha and the Happy Tree Cutting | | | 2300 | 2.1k |
| 1922E | Increasing Subsequences | | | 1800 | 9.3k |
| 1918C | XOR-distance | | | 1400 | 17.1k |
| 1886E | I Wanna be the Team Leader | | | 2400 | 1.9k |
| 1875C | Jellyfish and Green Apple | | | 1400 | 14.1k |
| 1870B | Friendly Arrays | | | 1200 | 16.5k |
| 1868B1 | Candy Party (Easy Version) | | | 1700 | 8.4k |
| 1868B2 | Candy Party (Hard Version) | | | 2100 | 2.8k |
| 1856E2 | PermuTree (hard version) | | | 2700 | 1.8k |
| 1851F | Lisa and the Martians | | | 1800 | 7.8k |
| 1847F | The Boss's Identity | | | 2500 | 1.1k |
| 1842B | Tenzing and Books | | | 1100 | 27.2k |
| 1787E | The Harmonization of XOR | | | 2100 | 2.8k |
| 1763A | Absolute Maximization | | | 800 | 17.1k |
| 1742G | Orray | | | 1500 | 13.7k |
| 1710C | XOR Triangle | | | 2500 | 1.7k |
| 1703G | Good Key, Bad Key | | | 1600 | 13k |
| 1673F | Anti-Theft Road Planning | | | 2400 | 979 |
| 1669H | Maximal AND | | | 1300 | 31.1k |
| 1641D | Two Arrays | | | 2700 | 1.6k |
| 1625A | Ancient Civilization | | | 800 | 18.4k |
| 1615B | And It's Non-Zero | | | 1300 | 18.1k |
| 1601A | Array Elimination | | | 1300 | 22.3k |
| 1592E | Bored Bakry | | | 2400 | 2k |
| 1554B | Cobb | | | 1700 | 13.9k |
| 1543E | The Final Pursuit | | | 2700 | 499 |
| 1493E | Enormous XOR | | | 2600 | 1.1k |
| 1492D | Genius's Gambit | | | 1900 | 6.5k |
| 1491D | Zookeeper and The Infinite Zoo | | | 1800 | 8.5k |
| 1466F | Euclid's nightmare | | | 2100 | 3.1k |
| 1421A | XORwice | | | 800 | 36.5k |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1411E | Poman Numbers | | | 2300 | 1.9k |
| 1383B | GameGame | | | 1900 | 5.6k |
| 1368D | AND, OR and square sum | | | 1700 | 14.2k |
| 1362C | Johnny and Another Rating Drop | | | 1400 | 24.7k |
| 1338B | Edge Weight Assignment | | | 1800 | 9.7k |
| 1312C | Adding Powers | | | 1400 | 18.5k |
| 979D | Kuro and GCD and XOR and SUM | | | 2200 | 2.3k |
| 916B | Jamie and Binary Sequence (changed after round) | | | 2000 | 2k |
| 276D | Little Girl and Maximum XOR | | | 1700 | 16.8k |