| 2234D | XOR, Expression and Two Binary Numbers | | | 1500 | 8.6k |
| 2229F | Load Unbalancing | | | 2400 | 1.1k |
| 2217F | Interval Game | | | 2300 | 885 |
| 2215D | EXPloration, EXPloitation, and Gain Some EXPerience! | | | 2800 | 162 |
| 2203B | Beautiful Numbers | | | 1000 | 16.2k |
| 2196E2 | Fuzzy Concatenation (Hard version) | | | 3000 | 238 |
| 2194C | Secret message | | | 1300 | 11.6k |
| 2194F1 | Again Trees... (Easy Version) | | | 2300 | 967 |
| 2194F2 | Again Trees... (hard version) | | | 3000 | 223 |
| 2190F | Xor Product | | | 3300 | 100 |
| 2187B | Shortest Statement Ever | | | 1800 | 5.6k |
| 2187D | Cool Problem | | | 2600 | 707 |
| 2182F1 | Christmas Reindeer (easy version) | | | 2300 | 1.3k |
| 2180C | XOR-factorization | | | 1900 | 6.7k |
| 2180E | No Effect XOR | | | 2300 | 1.8k |
| 2179H | Blackslex and Plants | | | 2200 | 1.4k |
| 2178G | deCH OR Dations | | | 2800 | 630 |
| 2178I | Numbers or Fireworks | | | 3300 | 265 |
| 2176F | Omega Numbers | | | 2400 | 1.6k |
| 2173D | Taiga's Carry Chains | | | 1900 | 3.8k |
| 2170F | Build XOR on a Segment | | | 2600 | 834 |
| 2157G | Isaac's Queries | | | 2800 | 672 |
| 2140E1 | Prime Gaming (Easy Version) | | | 2200 | 2.2k |
| 2140E2 | Prime Gaming (Hard Version) | | | 2500 | 1.3k |
| 2138C2 | Maple and Tree Beauty (Hard Version) | | | 2000 | 3.6k |
| 2131G | Wafu! | | | 2000 | 3.9k |
| 2129C3 | Interactive RBS (Hard Version) | | | 2300 | 1.9k |
| 2119E | And Constraint | | | 2600 | 732 |
| 2115D | Gellyfish and Forget-Me-Not | | | 2900 | 2.1k |
| 2103F | Maximize Nor | | | 2600 | 634 |
| 2096H | Wonderful XOR Problem | | | 3200 | 235 |
| 2086E | Zebra-like Numbers | | | 2400 | 1.7k |
| 2085C | Serval and The Formula | | | 1600 | 14k |
| 2081A | Math Division | | | 1800 | 4.2k |
| 2077F | AND x OR | | | 3300 | 271 |
| 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 |
| 2070F | Friends and Pizza | | | 3000 | 379 |
| 2066C | Bitwise Slides | | | 2300 | 2.6k |
| 2064D | Eating | | | 1900 | 6k |
| 2062H | Galaxy Generator | | | 3500 | 189 |
| 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 |
| 2051G | Snakes | | | 2100 | 2.5k |
| 2043F | Nim | | | 2700 | 918 |
| 2041C | Cube | | | 2000 | 2.1k |
| 2038D | Divide OR Conquer | | | 2400 | 888 |
| 2037G | Natlan Exploring | | | 2000 | 3.9k |
| 2036F | XORificator 3000 | | | 1900 | 5.5k |
| 2029H | Message Spread | | | 3500 | 111 |
| 2028F | Alice's Adventures in Addition | | | 2700 | 556 |
| 2027E2 | Bit Game (Hard Version) | | | 3100 | 111 |
| 2020E | Expected Power | | | 2000 | 4.1k |
| 1995D | Cases | | | 2300 | 3k |
| 1994G | Minecraft | | | 2600 | 1.7k |
| 1993E | Xor-Grid Problem | | | 2700 | 741 |
| 1991H | Prime Split Game | | | 3300 | 580 |
| 1990D | Grid Puzzle | | | 1800 | 7.9k |
| 1983G | Your Loss | | | 3000 | 325 |
| 1982E | Number of k-good subarrays | | | 2300 | 1.9k |
| 1979D | Fixing a Binary String | | | 1800 | 8k |
| 1975F | Set | | | 2600 | 1.1k |
| 1973F | Maximum GCD Sum Queries | | | 3100 | 345 |
| 1970G3 | Min-Fund Prison (Hard) | | | 2400 | 574 |
| 1967C | Fenwick Tree | | | 2300 | 2.3k |
| 1957D | A BIT of an Inequality | | | 1900 | 6k |
| 1956D | Nene and the Mex Operator | | | 2000 | 4.9k |
| 1955H | The Most Reckless Defense | | | 2300 | 1.6k |
| 1950G | Shuffling Songs | | | 1900 | 6.3k |
| 1930D2 | Sum over all Substrings (Hard Version) | | | 2100 | 3.1k |
| 1929E | Sasha and the Happy Tree Cutting | | | 2300 | 2.1k |
| 1926E | Vlad and an Odd Ordering | | | 1500 | 15.2k |
| 1926F | Vlad and Avoiding X | | | 2200 | 2.1k |
| 1917F | Construct Tree | | | 2500 | 1.3k |
| 1912K | Kim's Quest | | | 1800 | 4.4k |
| 1903D2 | Maximum And Queries (hard version) | | | 2500 | 1.1k |
| 1900D | Small GCD | | | 2000 | 5.6k |
| 1886E | I Wanna be the Team Leader | | | 2400 | 1.9k |
| 1882D | Tree XOR | | | 1900 | 7.3k |
| 1879D | Sum of XOR Functions | | | 1700 | 11.1k |
| 1874B | Jellyfish and Math | | | 2400 | 1.4k |
| 1872E | Data Structures Fan | | | 1500 | 22.5k |
| 1870E | Another MEX Problem | | | 2300 | 3.1k |
| 1868B2 | Candy Party (Hard Version) | | | 2100 | 2.8k |
| 1863F | Divide, XOR, and Conquer | | | 2600 | 1.4k |
| 1862F | Magic Will Save the World | | | 1800 | 7.8k |
| 1856E2 | PermuTree (hard version) | | | 2700 | 1.8k |
| 1854B | Earn or Unlock | | | 2200 | 4.4k |
| 1848F | Vika and Wiki | | | 2400 | 2.1k |
| 1847C | Vampiric Powers, anyone? | | | 1400 | 15k |
| 1846G | Rudolf and CodeVid-23 | | | 1900 | 5.9k |
| 1842H | Tenzing and Random Real Numbers | | | 3000 | 1.1k |
| 1829H | Don't Blame Me | | | 1700 | 11.3k |
| 1826E | Walk the Runway | | | 2400 | 2k |
| 1815D | XOR Counting | | | 2600 | 1.5k |
| 1807G2 | Subsequence Addition (Hard Version) | | | 1100 | 29.4k |