| 2234D | XOR, Expression and Two Binary Numbers | | | 1500 | 8.6k |
| 2217F | Interval Game | | | 2300 | 885 |
| 2203B | Beautiful Numbers | | | 1000 | 16.2k |
| 2194C | Secret message | | | 1300 | 11.6k |
| 2187D | Cool Problem | | | 2600 | 707 |
| 2182F1 | Christmas Reindeer (easy version) | | | 2300 | 1.3k |
| 2180E | No Effect XOR | | | 2300 | 1.8k |
| 2179H | Blackslex and Plants | | | 2200 | 1.4k |
| 2176F | Omega Numbers | | | 2400 | 1.6k |
| 2173D | Taiga's Carry Chains | | | 1900 | 3.8k |
| 2157G | Isaac's Queries | | | 2800 | 672 |
| 2131G | Wafu! | | | 2000 | 3.9k |
| 2115D | Gellyfish and Forget-Me-Not | | | 2900 | 2.1k |
| 2096H | Wonderful XOR Problem | | | 3200 | 235 |
| 2086E | Zebra-like Numbers | | | 2400 | 1.7k |
| 2081A | Math Division | | | 1800 | 4.2k |
| 2075D | Equalization | | | 2000 | 6k |
| 2075E | XOR Matrix | | | 2500 | 1.2k |
| 2071D1 | Infinite Sequence (Easy Version) | | | 1800 | 6.9k |
| 2071D2 | Infinite Sequence (Hard Version) | | | 2500 | 1.1k |
| 2066C | Bitwise Slides | | | 2300 | 2.6k |
| 2061E | Kevin and And | | | 2000 | 4.1k |
| 2056F1 | Xor of Median (Easy Version) | | | 2700 | 455 |
| 2056F2 | Xor of Median (Hard Version) | | | 3000 | 362 |
| 2053C | Bewitching Stargazer | | | 1500 | 12.6k |
| 2037G | Natlan Exploring | | | 2000 | 3.9k |
| 2027E2 | Bit Game (Hard Version) | | | 3100 | 111 |
| 2020E | Expected Power | | | 2000 | 4.1k |
| 1994G | Minecraft | | | 2600 | 1.7k |
| 1991H | Prime Split Game | | | 3300 | 580 |
| 1982E | Number of k-good subarrays | | | 2300 | 1.9k |
| 1975F | Set | | | 2600 | 1.1k |
| 1967C | Fenwick Tree | | | 2300 | 2.3k |
| 1957D | A BIT of an Inequality | | | 1900 | 6k |
| 1956D | Nene and the Mex Operator | | | 2000 | 4.9k |
| 1929E | Sasha and the Happy Tree Cutting | | | 2300 | 2.1k |
| 1926E | Vlad and an Odd Ordering | | | 1500 | 15.2k |
| 1900D | Small GCD | | | 2000 | 5.6k |
| 1886E | I Wanna be the Team Leader | | | 2400 | 1.9k |
| 1879D | Sum of XOR Functions | | | 1700 | 11.1k |
| 1868B2 | Candy Party (Hard Version) | | | 2100 | 2.8k |
| 1863F | Divide, XOR, and Conquer | | | 2600 | 1.4k |
| 1856E2 | PermuTree (hard version) | | | 2700 | 1.8k |
| 1848F | Vika and Wiki | | | 2400 | 2.1k |
| 1842H | Tenzing and Random Real Numbers | | | 3000 | 1.1k |
| 1829H | Don't Blame Me | | | 1700 | 11.3k |
| 1815D | XOR Counting | | | 2600 | 1.5k |
| 1777D | Score of a Tree | | | 1900 | 4.9k |
| 1773G | Game of Questions | | | 2800 | 560 |
| 1770F | Koxia and Sequence | | | 3100 | 1k |
| 1767E | Algebra Flash | | | 2500 | 1.3k |
| 1743G | Antifibonacci Cut | | | 3000 | 381 |
| 1734F | Zeros and Ones | | | 2500 | 1k |
| 1728G | Illumination | | | 2700 | 669 |
| 1713F | Lost Array | | | 2900 | 771 |
| 1710C | XOR Triangle | | | 2500 | 1.7k |
| 1709F | Multiset of Strings | | | 2500 | 729 |
| 1703G | Good Key, Bad Key | | | 1600 | 13k |
| 1679F | Formalism for Formalism | | | 2600 | 813 |
| 1646C | Factorials and Powers of Two | | | 1500 | 20.5k |
| 1635D | Infinite Set | | | 1800 | 7.1k |
| 1632C | Strange Test | | | 1600 | 14.2k |
| 1616H | Keep XOR Low | | | 3000 | 1.4k |
| 1614C | Divan and bitwise operations | | | 1500 | 11.4k |
| 1567C | Carrying Conundrum | | | 1600 | 13.3k |
| 1557C | Moamen and XOR | | | 1700 | 10.9k |
| 1556F | Sports Betting | | | 2500 | 1.5k |
| 1552D | Array Differentiation | | | 1800 | 8k |
| 1530F | Bingo | | | 2600 | 1.2k |
| 1516C | Baby Ehab Partitions Again | | | 1700 | 14.5k |
| 1498F | Christmas Game | | | 2500 | 1.1k |
| 1491D | Zookeeper and The Infinite Zoo | | | 1800 | 8.5k |
| 1463F | Max Correct Set | | | 3100 | 796 |
| 1430G | Yet Another DAG Problem | | | 2600 | 949 |
| 1423J | Bubble Cup hypothesis | | | 2400 | 915 |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1400G | Mercenaries | | | 2600 | 1.2k |
| 1392G | Omkar and Pies | | | 2900 | 733 |
| 1383B | GameGame | | | 1900 | 5.6k |
| 1326F2 | Wise Men (Hard Version) | | | 3200 | 726 |
| 1299D | Around the World | | | 3000 | 652 |
| 1073E | Segment Sum | | | 2300 | 3.8k |
| 1043F | Make It One | | | 2500 | 3.1k |
| 1034E | Little C Loves 3 III | | | 3200 | 819 |
| 979D | Kuro and GCD and XOR and SUM | | | 2200 | 2.3k |
| 959E | Mahmoud and Ehab and the xor-MST | | | 1900 | 3.8k |
| 959F | Mahmoud and Ehab and yet another xor task | | | 2400 | 3k |
| 914G | Sum the Fibonacci | | | 2600 | 1.3k |
| 908E | New Year and Entity Enumeration | | | 2500 | 871 |
| 900D | Unusual Sequences | | | 2000 | 3.9k |
| 895C | Square Subsets | | | 2000 | 7.6k |
| 766E | Mahmoud and a xor trip | | | 2100 | 3.6k |
| 698C | LRU | | | 2400 | 1.5k |
| 678E | Another Sith Tournament | | | 2200 | 2.8k |
| 662C | Binary Table | | | 2600 | 2.6k |
| 547C | Mike and Foam | | | 2300 | 3.5k |
| 525E | Anya and Cubes | | | 2100 | 4.4k |
| 510D | Fox And Jumping | | | 1900 | 6.5k |
| 476B | Dreamoon and WiFi | | | 1300 | 38k |
| 441E | Valera and Number | | | 2400 | 835 |