| 2245D2 | Construct an Array (Hard Version) | | | unrated | 1.7k |
| 2222F | Building Tree | | | 2600 | 716 |
| 2194E | The Turtle Strikes Back | | | 2000 | 2.8k |
| 2193H | Remove the Grail Tree | | | 2400 | 1.1k |
| 2172N | New Kingdom | | | 2800 | 176 |
| 2158D | Palindrome Flipping | | | 2000 | 3.4k |
| 2158E | Sink | | | 2600 | 665 |
| 2150F | Cycle Closing | | | 3000 | 224 |
| 2127G2 | Inter Active (Hard Version) | | | 3500 | 126 |
| 2127H | 23 Rises Again | | | 3100 | 1.9k |
| 2126F | 1-1-1, Free Tree! | | | 2000 | 4.4k |
| 2118D1 | Red Light, Green Light (Easy version) | | | 1700 | 8.6k |
| 2118D2 | Red Light, Green Light (Hard version) | | | 2200 | 2.6k |
| 2113E | From Kazan with Love | | | 2800 | 430 |
| 2110E | Melody | | | 2300 | 2.8k |
| 2108C | Neo's Escape | | | 1500 | 15.1k |
| 2108E | Spruce Dispute | | | 2600 | 922 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2086C | Disappearing Permutation | | | 1300 | 16.6k |
| 2078B | Vicious Labyrinth | | | 1100 | 18.6k |
| 2066A | Object Identification | | | 1400 | 7.4k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 2063F2 | Counting Is Not Fun (Hard Version) | | | 2700 | 951 |
| 2062E2 | The Game (Hard Version) | | | 3000 | 464 |
| 2056B | Find the Permutation | | | 1300 | 18.2k |
| 2045M | Mirror Maze | | | 1800 | 2.3k |
| 2044G1 | Medium Demon Problem (easy version) | | | 1700 | 7.6k |
| 2044G2 | Medium Demon Problem (hard version) | | | 1900 | 4k |
| 2043E | Matrix Transformation | | | 2300 | 1.9k |
| 2034C | Trapped in the Witch's Labyrinth | | | 1400 | 9.4k |
| 2032D | Genokraken | | | 1800 | 6.3k |
| 2028D | Alice's Adventures in Cards | | | 2000 | 3.8k |
| 2027D1 | The Endspeaker (Easy Version) | | | 1700 | 7.1k |
| 2023C | C+K+S | | | 2400 | 1.4k |
| 2021E1 | Digital Village (Easy Version) | | | 2300 | 2k |
| 2006F | Dora's Paint | | | 3500 | 173 |
| 2004D | Colored Portals | | | 1600 | 13.5k |
| 2003D2 | Turtle and a MEX Problem (Hard Version) | | | 2100 | 4.7k |
| 1985H1 | Maximize the Largest Component (Easy Version) | | | 1700 | 7.4k |
| 1967D | Long Way to be Non-decreasing | | | 2800 | 998 |
| 1950G | Shuffling Songs | | | 1900 | 6.3k |
| 1949J | Amanda the Amoeba | | | 2600 | 550 |
| 1948E | Clique Partition | | | 2100 | 3.6k |
| 1936C | Pokémon Arena | | | 2400 | 1.8k |
| 1927F | Microcycle | | | 1900 | 5.6k |
| 1926G | Vlad and Trouble at MIT | | | 1900 | 4.7k |
| 1918F | Caterpillar on a Tree | | | 2500 | 1.2k |
| 1915G | Bicycles | | | 1800 | 10.3k |
| 1907G | Lights | | | 2200 | 2.4k |
| 1904E | Tree Queries | | | 2500 | 1.4k |
| 1904F | Beautiful Tree | | | 2800 | 581 |
| 1902F | Trees and XOR Queries Again | | | 2400 | 1.5k |
| 1900E | Transitive Graph | | | 2100 | 2.7k |
| 1893A | Anonymous Informant | | | 1400 | 15.3k |
| 1889D | Game of Stacks | | | 3000 | 982 |
| 1879E | Interactive Game with Coloring | | | 2400 | 1.6k |
| 1872F | Selling a Menagerie | | | 1800 | 7.7k |
| 1868B1 | Candy Party (Easy Version) | | | 1700 | 8.4k |
| 1868D | Flower-like Pseudotree | | | 3000 | 418 |
| 1867D | Cyclic Operations | | | 1800 | 6.9k |
| 1866K | Keen Tree Calculation | | | 2500 | 585 |
| 1851G | Vlad and the Mountains | | | 2000 | 4.2k |
| 1850H | The Third Letter | | | 1700 | 10.2k |
| 1835F | Good Graph | | | 3500 | 347 |
| 1829E | The Lakes | | | 1100 | 27.7k |
| 1826E | Walk the Runway | | | 2400 | 2k |
| 1815B | Sum Graph | | | 2000 | 3.7k |
| 1811F | Is It Flower? | | | 2100 | 2.2k |
| 1809F | Traveling in Berland | | | 2500 | 972 |
| 1797A | Li Hua and Maze | | | 800 | 19.7k |
| 1788F | XOR, Tree, and Queries | | | 2500 | 1.2k |
| 1787D | Game on Axis | | | 1900 | 3.9k |
| 1772F | Copy of a Copy of a Copy | | | 2000 | 2.9k |
| 1770D | Koxia and Game | | | 2000 | 4.5k |
| 1765H | Hospital Queue | | | 2200 | 1.6k |
| 1737D | Ela and the Wiring Wizard | | | 2200 | 2.1k |
| 1735C | Phase Shift | | | 1400 | 11k |
| 1718E | Impressionism | | | 3500 | 228 |
| 1717F | Madoka and The First Session | | | 2500 | 788 |
| 1704E | Count Seconds | | | 2200 | 2.7k |
| 1698F | Equal Reversal | | | 2800 | 782 |
| 1697E | Coloring | | | 2400 | 1.5k |
| 1697F | Too Many Constraints | | | 2800 | 788 |
| 1675D | Vertical Paths | | | 1300 | 15.1k |
| 1670C | Where is the Pizza? | | | 1400 | 11.1k |
| 1662F | Antennas | | | unrated | 1.3k |
| 1662O | Circular Maze | | | unrated | 1.6k |
| 1648E | Air Reform | | | 3200 | 601 |
| 1647B | Madoka and the Elegant Gift | | | 1200 | 17.2k |
| 1627F | Not Splitting | | | 2700 | 691 |
| 1617E | Christmas Chocolates | | | 2700 | 1.1k |
| 1609D | Social Network | | | 1600 | 8.6k |
| 1607F | Robot on the Board 2 | | | 2300 | 2.2k |
| 1578K | Kingdom of Islands | | | 2800 | 435 |
| 1574D | The Strongest Build | | | 2000 | 4.9k |
| 1572A | Book | | | 1800 | 10.6k |
| 1567F | One-Four Overload | | | 2700 | 888 |
| 1566G | Four Vertices | | | 3100 | 433 |
| 1549B | Gregor and the Pawn Game | | | 800 | 27.2k |
| 1520G | To Go Or Not To Go? | | | 2200 | 4.4k |