| 2244F | Anya Loves Trees! | | | unrated | 3.5k |
| 2238C | Village Guilds | | | 1400 | 8.7k |
| 2232D | Magical Tiered Cake | | | 2000 | 2.7k |
| 2231E | Graph Cutting | | | 2300 | 1.1k |
| 2230F | Game on Growing Tree | | | 2700 | 510 |
| 2228C2 | Cirno and Number (Hard Version) | | | 1600 | 6.1k |
| 2228F | Momoyo and the Network | | | 2700 | 339 |
| 2227H | Fallen Leaves | | | 2100 | 1.7k |
| 2219C | Coloring a Red Black Tree | | | 2300 | 1.4k |
| 2217H | Closer | | | 2800 | 278 |
| 2207D | Boxed Like a Fish | | | 2200 | 2.3k |
| 2196C1 | Interactive Graph (Simple Version) | | | 1800 | 3.9k |
| 2196C2 | Interactive Graph (Hard Version) | | | 2000 | 2.7k |
| 2195E | Idiot First Search | | | 1500 | 9.4k |
| 2194F1 | Again Trees... (Easy Version) | | | 2300 | 968 |
| 2194F2 | Again Trees... (hard version) | | | 3000 | 223 |
| 2193H | Remove the Grail Tree | | | 2400 | 1.1k |
| 2189F | Zhora the Vacuum Cleaner | | | 2800 | 254 |
| 2184C | Huge Pile | | | 1100 | 23k |
| 2184F | Cherry Tree | | | 1900 | 4.2k |
| 2183F | Jumping Man | | | 2500 | 1.2k |
| 2182G | Short Garland | | | 2800 | 383 |
| 2176E | Remove at the lowest cost | | | 2400 | 1.3k |
| 2167F | Tree, TREE!!! | | | 1600 | 7.6k |
| 2164F1 | Chain Prefix Rank (Easy Version) | | | 2600 | 1.3k |
| 2164F2 | Chain Prefix Rank (Hard Version) | | | 2900 | 662 |
| 2157G | Isaac's Queries | | | 2800 | 678 |
| 2152H1 | Victorious Coloring (Easy Version) | | | 2900 | 1.8k |
| 2145D | Inversion Value of a Permutation | | | 1800 | 7k |
| 2145F | Long Journey | | | 2500 | 1.1k |
| 2138C1 | Maple and Tree Beauty (Easy Version) | | | 1800 | 5.7k |
| 2138C2 | Maple and Tree Beauty (Hard Version) | | | 2000 | 3.6k |
| 2137G | Cry Me a River | | | 2200 | 2k |
| 2133E | I Yearned For The Mines | | | 2500 | 1.8k |
| 2131G | Wafu! | | | 2000 | 3.9k |
| 2127H | 23 Rises Again | | | 3100 | 1.9k |
| 2119F | Volcanic Eruptions | | | 3300 | 191 |
| 2118D1 | Red Light, Green Light (Easy version) | | | 1700 | 8.6k |
| 2118D2 | Red Light, Green Light (Hard version) | | | 2200 | 2.6k |
| 2115B | Gellyfish and Camellia Japonica | | | 2100 | 5.1k |
| 2114E | Kirei Attacks the Estate | | | 1400 | 14.4k |
| 2114F | Small Operations | | | 2000 | 5.6k |
| 2112E | Tree Colorings | | | 2200 | 3.5k |
| 2110D | Fewer Batteries | | | 1700 | 8.9k |
| 2106F | Goblin | | | 1900 | 4.5k |
| 2104F | Numbers and Strings | | | 2600 | 742 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2097E | Clearing the Snowdrift | | | 3100 | 287 |
| 2086C | Disappearing Permutation | | | 1300 | 16.6k |
| 2086E | Zebra-like Numbers | | | 2400 | 1.7k |
| 2071C | Trapmigiano Reggiano | | | 1700 | 9.9k |
| 2070D | Tree Jumps | | | 1600 | 11.5k |
| 2063C | Remove Exactly Two | | | 1600 | 15.1k |
| 2063E | Triangle Tree | | | 2300 | 2.4k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 2062D | Balanced Tree | | | 2200 | 3.6k |
| 2057E2 | Another Exercise on Graphs (hard version) | | | 2500 | 2k |
| 2056E | Nested Segments | | | 2500 | 1.1k |
| 2053E | Resourceful Caterpillar Sequence | | | 1900 | 4.6k |
| 2050G | Tree Destruction | | | 1900 | 5.5k |
| 2044G2 | Medium Demon Problem (hard version) | | | 1900 | 4k |
| 2041C | Cube | | | 2000 | 2.1k |
| 2040E | Control of Randomness | | | 2100 | 2.8k |
| 2035F | Tree Operations | | | 2500 | 1.1k |
| 2034H | Rayan vs. Rayaneh | | | 3300 | 199 |
| 2033G | Sakurako and Chefir | | | 2200 | 2k |
| 2031D | Penchick and Desert Rabbit | | | 1700 | 10.1k |
| 2031E | Penchick and Chloe's Trees | | | 2100 | 2.8k |
| 2028E | Alice's Adventures in the Rabbit Hole | | | 2300 | 2k |
| 2027C | Add Zeros | | | 1500 | 14.2k |
| 2026F | Bermart Ice Cream | | | 2700 | 413 |
| 2025F | Choose Your Queries | | | 2700 | 1.1k |
| 2021E1 | Digital Village (Easy Version) | | | 2300 | 2k |
| 2021E3 | Digital Village (Extreme Version) | | | 2800 | 725 |
| 2014F | Sheriff's Defense | | | 2000 | 5.3k |
| 2003D2 | Turtle and a MEX Problem (Hard Version) | | | 2100 | 4.7k |
| 2002F1 | Court Blue (Easy Version) | | | 2600 | 1k |
| 1997D | Maximize the Root | | | 1500 | 16.3k |
| 1988D | The Omnipotent Monster Killer | | | 2000 | 6.1k |
| 1985H2 | Maximize the Largest Component (Hard Version) | | | 2200 | 2k |
| 1976F | Remove Bridges | | | 2800 | 893 |
| 1975D | Paint the Tree | | | 1700 | 7.7k |
| 1975F | Set | | | 2600 | 1.1k |
| 1970C2 | Game on Tree (Medium) | | | 1700 | 4.5k |
| 1970C3 | Game on Tree (Hard) | | | 1900 | 2.5k |
| 1970G2 | Min-Fund Prison (Medium) | | | 2200 | 909 |
| 1970G3 | Min-Fund Prison (Hard) | | | 2400 | 575 |
| 1955G | GCD on a grid | | | 1900 | 6.1k |
| 1950G | Shuffling Songs | | | 1900 | 6.3k |
| 1949A | Grove | | | 3300 | 223 |
| 1949C | Annual Ants' Gathering | | | 1900 | 2.6k |
| 1948C | Arrow Path | | | 1300 | 21.5k |
| 1946F | Nobody is needed | | | 2500 | 1.3k |
| 1942D | Learning to Paint | | | 2100 | 3.4k |
| 1941D | Rudolf and the Ball Game | | | 1200 | 21.3k |
| 1933F | Turtle Mission: Robot and the Earthquake | | | 2100 | 3k |
| 1929E | Sasha and the Happy Tree Cutting | | | 2300 | 2.1k |
| 1926F | Vlad and Avoiding X | | | 2200 | 2.1k |
| 1926G | Vlad and Trouble at MIT | | | 1900 | 4.7k |
| 1923E | Count Paths | | | 2000 | 5.3k |