| 1864C | Divisor Chain | | | 1300 | 15.5k |
| 1864E | Guess Game | | | 2100 | 3.1k |
| 1863F | Divide, XOR, and Conquer | | | 2600 | 1.4k |
| 1856E2 | PermuTree (hard version) | | | 2700 | 1.8k |
| 1851F | Lisa and the Martians | | | 1800 | 7.8k |
| 1848F | Vika and Wiki | | | 2400 | 2.1k |
| 1847F | The Boss's Identity | | | 2500 | 1.1k |
| 1844G | Tree Weights | | | 3000 | 1.2k |
| 1843C | Sum in Binary Tree | | | 800 | 40.3k |
| 1842B | Tenzing and Books | | | 1100 | 27.2k |
| 1842H | Tenzing and Random Real Numbers | | | 3000 | 1.1k |
| 1840B | Binary Cafe | | | 1100 | 25k |
| 1835C | Twin Clusters | | | 2600 | 1.2k |
| 1829H | Don't Blame Me | | | 1700 | 11.3k |
| 1815D | XOR Counting | | | 2600 | 1.5k |
| 1792D | Fixed Prefix Permutations | | | 1700 | 8.3k |
| 1787E | The Harmonization of XOR | | | 2100 | 2.8k |
| 1778E | The Tree Has Fallen! | | | 2500 | 1.2k |
| 1777D | Score of a Tree | | | 1900 | 4.9k |
| 1775C | Interesting Sequence | | | 1600 | 14.9k |
| 1773G | Game of Questions | | | 2800 | 560 |
| 1770F | Koxia and Sequence | | | 3100 | 1k |
| 1767E | Algebra Flash | | | 2500 | 1.3k |
| 1763A | Absolute Maximization | | | 800 | 17.1k |
| 1748D | ConstructOR | | | 2100 | 3.3k |
| 1743G | Antifibonacci Cut | | | 3000 | 381 |
| 1742G | Orray | | | 1500 | 13.7k |
| 1734F | Zeros and Ones | | | 2500 | 1k |
| 1731C | Even Subarrays | | | 1700 | 12.5k |
| 1728G | Illumination | | | 2700 | 669 |
| 1726B | Mainak and Interesting Sequence | | | 1100 | 17.1k |
| 1725D | Deducing Sortability | | | 2900 | 254 |
| 1713F | Lost Array | | | 2900 | 771 |
| 1710C | XOR Triangle | | | 2500 | 1.7k |
| 1709F | Multiset of Strings | | | 2500 | 729 |
| 1703G | Good Key, Bad Key | | | 1600 | 13k |
| 1698G | Long Binary String | | | 2900 | 397 |
| 1679F | Formalism for Formalism | | | 2600 | 813 |
| 1673E | Power or XOR? | | | 2500 | 850 |
| 1673F | Anti-Theft Road Planning | | | 2400 | 979 |
| 1669H | Maximal AND | | | 1300 | 31.1k |
| 1665D | GCD Guess | | | 2000 | 4.8k |
| 1658D1 | 388535 (Easy Version) | | | 1600 | 10.1k |
| 1658D2 | 388535 (Hard Version) | | | 2300 | 3.2k |
| 1646C | Factorials and Powers of Two | | | 1500 | 20.5k |
| 1641D | Two Arrays | | | 2700 | 1.6k |
| 1635D | Infinite Set | | | 1800 | 7.1k |
| 1634B | Fortune Telling | | | 1400 | 23.3k |
| 1632C | Strange Test | | | 1600 | 14.2k |
| 1625A | Ancient Civilization | | | 800 | 18.4k |
| 1625D | Binary Spiders | | | 2300 | 2.4k |
| 1618F | Reverse | | | 2000 | 4.8k |
| 1616H | Keep XOR Low | | | 3000 | 1.4k |
| 1615B | And It's Non-Zero | | | 1300 | 18.1k |
| 1614C | Divan and bitwise operations | | | 1500 | 11.4k |
| 1601A | Array Elimination | | | 1300 | 22.3k |
| 1594B | Special Numbers | | | 1100 | 22.4k |
| 1592E | Bored Bakry | | | 2400 | 2k |
| 1567C | Carrying Conundrum | | | 1600 | 13.3k |
| 1559A | Mocha and Math | | | 900 | 48.3k |
| 1557C | Moamen and XOR | | | 1700 | 10.9k |
| 1556D | Take a Guess | | | 1800 | 9k |
| 1556F | Sports Betting | | | 2500 | 1.5k |
| 1554B | Cobb | | | 1700 | 13.9k |
| 1552D | Array Differentiation | | | 1800 | 8k |
| 1548D1 | Gregor and the Odd Cows (Easy) | | | 2300 | 1.6k |
| 1543C | Need for Pink Slips | | | 1900 | 5.7k |
| 1543D1 | RPD and Rap Sheet (Easy Version) | | | 1700 | 8.1k |
| 1543E | The Final Pursuit | | | 2700 | 499 |
| 1530F | Bingo | | | 2600 | 1.2k |
| 1516C | Baby Ehab Partitions Again | | | 1700 | 14.5k |
| 1514B | AND 0, Sum Big | | | 1200 | 36.7k |
| 1513B | AND Sequences | | | 1400 | 21k |
| 1498F | Christmas Game | | | 2500 | 1.1k |
| 1493E | Enormous XOR | | | 2600 | 1.1k |
| 1492D | Genius's Gambit | | | 1900 | 6.5k |
| 1491D | Zookeeper and The Infinite Zoo | | | 1800 | 8.5k |
| 1470B | Strange Definition | | | 1900 | 6.8k |
| 1466E | Apollo versus Pan | | | 1800 | 8.5k |
| 1466F | Euclid's nightmare | | | 2100 | 3.1k |
| 1463F | Max Correct Set | | | 3100 | 796 |
| 1451E1 | Bitwise Queries (Easy Version) | | | 2000 | 5.6k |
| 1451E2 | Bitwise Queries (Hard Version) | | | 2300 | 4k |
| 1438D | Powerful Ksenia | | | 2200 | 4.6k |
| 1430G | Yet Another DAG Problem | | | 2600 | 949 |
| 1427E | Xum | | | 2500 | 1.7k |
| 1423J | Bubble Cup hypothesis | | | 2400 | 915 |
| 1421A | XORwice | | | 800 | 36.5k |
| 1420B | Rock and Lever | | | 1200 | 37.6k |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1411E | Poman Numbers | | | 2300 | 1.9k |
| 1411G | No Game No Life | | | 2700 | 952 |
| 1400G | Mercenaries | | | 2600 | 1.2k |
| 1398G | Running Competition | | | 2600 | 1.3k |
| 1392E | Omkar and Duck | | | 2100 | 3.8k |
| 1392G | Omkar and Pies | | | 2900 | 733 |
| 1383B | GameGame | | | 1900 | 5.6k |
| 1368D | AND, OR and square sum | | | 1700 | 14.2k |
| 1365G | Secure Password | | | 2800 | 1.5k |
| 1362C | Johnny and Another Rating Drop | | | 1400 | 24.7k |