| 2244F | Anya Loves Trees! | | | unrated | 3.5k |
| 2242F | Summer Vacation | | | 2700 | 385 |
| 2241E | Fair and Square | | | 1600 | 5.8k |
| 2238C | Village Guilds | | | 1400 | 8.6k |
| 2237I1 | DBFS Order (Easy Version) | | | 3500 | 63 |
| 2237I2 | DBFS Order (Hard Version) | | | 3500 | 89 |
| 2231E | Graph Cutting | | | 2300 | 1.1k |
| 2230F | Game on Growing Tree | | | 2700 | 510 |
| 2229E | Deconstruction Tree | | | 2100 | 2k |
| 2229I | The Endians | | | 3400 | 223 |
| 2228F | Momoyo and the Network | | | 2700 | 337 |
| 2227H | Fallen Leaves | | | 2100 | 1.7k |
| 2219C | Coloring a Red Black Tree | | | 2300 | 1.4k |
| 2217G | Down the Pivot | | | 2600 | 444 |
| 2217H | Closer | | | 2800 | 278 |
| 2211E | Minimum Path Cover | | | 2500 | 1k |
| 2207D | Boxed Like a Fish | | | 2200 | 2.3k |
| 2206D | Christmas Tree Un-decoration | | | 2600 | 322 |
| 2205D | Simons and Beating Peaks | | | 1700 | 5.6k |
| 2195E | Idiot First Search | | | 1500 | 9.4k |
| 2195G | Idiot First Search and Queries | | | 2300 | 1.2k |
| 2194F1 | Again Trees... (Easy Version) | | | 2300 | 967 |
| 2194F2 | Again Trees... (hard version) | | | 3000 | 223 |
| 2193H | Remove the Grail Tree | | | 2400 | 1.1k |
| 2192D | Cost of Tree | | | 1800 | 3.9k |
| 2189F | Zhora the Vacuum Cleaner | | | 2800 | 254 |
| 2187F2 | Al Fine (Counting Version) | | | 3500 | 88 |
| 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 |
| 2174D | Secret Message | | | 3400 | 317 |
| 2174F | Mosaic Tree | | | 2800 | 508 |
| 2171D | Rae Taylor and Trees (easy version) | | | 1400 | 12.3k |
| 2171F | Rae Taylor and Trees (hard version) | | | 1600 | 7.6k |
| 2167F | Tree, TREE!!! | | | 1600 | 7.6k |
| 2165E | Rainbow Branch | | | 3200 | 416 |
| 2164F1 | Chain Prefix Rank (Easy Version) | | | 2600 | 1.3k |
| 2164F2 | Chain Prefix Rank (Hard Version) | | | 2900 | 648 |
| 2138C1 | Maple and Tree Beauty (Easy Version) | | | 1800 | 5.7k |
| 2138C2 | Maple and Tree Beauty (Hard Version) | | | 2000 | 3.6k |
| 2133E | I Yearned For The Mines | | | 2500 | 1.8k |
| 2127H | 23 Rises Again | | | 3100 | 1.9k |
| 2124H | Longest Good Subsequence | | | 3400 | 232 |
| 2119F | Volcanic Eruptions | | | 3300 | 191 |
| 2115B | Gellyfish and Camellia Japonica | | | 2100 | 5k |
| 2114E | Kirei Attacks the Estate | | | 1400 | 14.4k |
| 2112E | Tree Colorings | | | 2200 | 3.5k |
| 2101E | Kia Bakes a Cake | | | 3100 | 2k |
| 2101F | Shoo Shatters the Sunshine | | | 3300 | 168 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2071C | Trapmigiano Reggiano | | | 1700 | 9.9k |
| 2071E | LeaFall | | | 2600 | 840 |
| 2070D | Tree Jumps | | | 1600 | 11.5k |
| 2068D | Morse Code | | | 3100 | 271 |
| 2064D | Eating | | | 1900 | 6k |
| 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 |
| 2053E | Resourceful Caterpillar Sequence | | | 1900 | 4.6k |
| 2052M | Managing Cluster | | | 2700 | 403 |
| 2050G | Tree Destruction | | | 1900 | 5.5k |
| 2048F | Kevin and Math Class | | | 2500 | 1.3k |
| 2044G2 | Medium Demon Problem (hard version) | | | 1900 | 4k |
| 2040E | Control of Randomness | | | 2100 | 2.8k |
| 2035F | Tree Operations | | | 2500 | 1.1k |
| 2035G1 | Go Learn! (Easy Version) | | | 3300 | 175 |
| 2033G | Sakurako and Chefir | | | 2200 | 2k |
| 2031E | Penchick and Chloe's Trees | | | 2100 | 2.8k |
| 2028E | Alice's Adventures in the Rabbit Hole | | | 2300 | 2k |
| 2026F | Bermart Ice Cream | | | 2700 | 413 |
| 2025F | Choose Your Queries | | | 2700 | 1.1k |
| 2023E | Tree of Life | | | 3300 | 194 |
| 2021E1 | Digital Village (Easy Version) | | | 2300 | 2k |
| 2021E2 | Digital Village (Hard Version) | | | 2500 | 1.3k |
| 2021E3 | Digital Village (Extreme Version) | | | 2800 | 725 |
| 2020D | Connect the Dots | | | 1800 | 7.6k |
| 2014F | Sheriff's Defense | | | 2000 | 5.3k |
| 2013F1 | Game in Tree (Easy Version) | | | 2700 | 679 |
| 2001E1 | Deterministic Heap (Easy Version) | | | 2400 | 1.6k |
| 2001E2 | Deterministic Heap (Hard Version) | | | 2900 | 302 |
| 1997D | Maximize the Root | | | 1500 | 16.3k |
| 1988D | The Omnipotent Monster Killer | | | 2000 | 6.1k |
| 1987G1 | Spinning Round (Easy Version) | | | 2900 | 361 |
| 1987G2 | Spinning Round (Hard Version) | | | 3500 | 255 |
| 1984E | Shuffle | | | 2400 | 1.9k |
| 1983G | Your Loss | | | 3000 | 325 |
| 1981F | Turtle and Paths on a Tree | | | 3000 | 358 |
| 1976F | Remove Bridges | | | 2800 | 893 |
| 1975D | Paint the Tree | | | 1700 | 7.6k |
| 1970C2 | Game on Tree (Medium) | | | 1700 | 4.5k |
| 1970C3 | Game on Tree (Hard) | | | 1900 | 2.5k |
| 1970G2 | Min-Fund Prison (Medium) | | | 2200 | 907 |
| 1970G3 | Min-Fund Prison (Hard) | | | 2400 | 574 |
| 1967C | Fenwick Tree | | | 2300 | 2.3k |
| 1951H | Thanos Snap | | | 3200 | 380 |
| 1949C | Annual Ants' Gathering | | | 1900 | 2.6k |
| 1946C | Tree Cutting | | | 1600 | 14.1k |
| 1942H | Farmer John's Favorite Intern | | | 3500 | 262 |