| 1859F | Teleportation in Byteland | | | 3200 | 582 |
| 1858E1 | Rollbacks (Easy Version) | | | 2500 | 1.7k |
| 1858E2 | Rollbacks (Hard Version) | | | 2600 | 1.3k |
| 1851G | Vlad and the Mountains | | | 2000 | 4.2k |
| 1849F | XOR Partition | | | 2700 | 911 |
| 1844G | Tree Weights | | | 3000 | 1.2k |
| 1843F1 | Omsk Metro (simple version) | | | 1800 | 6.5k |
| 1843F2 | Omsk Metro (hard version) | | | 2300 | 2.2k |
| 1827D | Two Centroids | | | 2800 | 1k |
| 1824C | LuoTianyi and XOR-Tree | | | 2500 | 1.7k |
| 1824E | LuoTianyi and Cartridge | | | 3500 | 196 |
| 1810F | M-tree | | | 2800 | 701 |
| 1806E | Tree Master | | | 2200 | 3.5k |
| 1805E | There Should Be a Lot of Maximums | | | 2300 | 2k |
| 1801E | Gasoline prices | | | 3000 | 748 |
| 1797D | Li Hua and Tree | | | 1900 | 4.7k |
| 1797F | Li Hua and Path | | | 3000 | 666 |
| 1794E | Labeling the Tree with Distances | | | 2400 | 1.6k |
| 1787G | Colorful Tree Again | | | 3000 | 628 |
| 1783G | Weighed Tree Radius | | | 2800 | 625 |
| 1777F | Comfortably Numb | | | 2400 | 1.5k |
| 1774G | Segment Covering | | | 3200 | 692 |
| 1771D | Hossam and (sub-)palindromic tree | | | 2100 | 3.3k |
| 1771F | Hossam and Range Minimum Query | | | 2500 | 1.7k |
| 1767F | Two Subtrees | | | 3100 | 445 |
| 1763F | Edge Queries | | | 3000 | 750 |
| 1749F | Distance to the Path | | | 2800 | 642 |
| 1748E | Yet Another Array Counting Problem | | | 2300 | 2.8k |
| 1740E | Hanging Hearts | | | 1800 | 5.1k |
| 1740H | MEX Tree Manipulation | | | 3300 | 466 |
| 1739D | Reset K Edges | | | 1900 | 6.4k |
| 1738D | Permutation Addicts | | | 1900 | 3.8k |
| 1725E | Electrical Efficiency | | | 2500 | 640 |
| 1720D2 | Xor-Subsequence (hard version) | | | 2400 | 2.3k |
| 1718D | Permutation for Burenka | | | 3300 | 449 |
| 1714G | Path Prefixes | | | 1700 | 9.9k |
| 1712F | Triameter | | | 3200 | 508 |
| 1709E | XOR Tree | | | 2400 | 4.2k |
| 1706E | Qpwoeirut and Vertices | | | 2300 | 4k |
| 1702G2 | Passable Paths (hard version) | | | 2000 | 6.1k |
| 1681F | Unique Occurrences | | | 2300 | 2.4k |
| 1661E | Narrow Components | | | 2500 | 1.2k |
| 1654G | Snowy Mountain | | | 2900 | 474 |
| 1648E | Air Reform | | | 3200 | 601 |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1633F | Perfect Matching | | | 2800 | 652 |
| 1632E1 | Distance Tree (easy version) | | | 2400 | 1.4k |
| 1628E | Groceries in Meteor Town | | | 3100 | 1.3k |
| 1625D | Binary Spiders | | | 2300 | 2.4k |
| 1625E1 | Cats on the Upgrade (easy version) | | | 2500 | 1.2k |
| 1625E2 | Cats on the Upgrade (hard version) | | | 2800 | 705 |
| 1623E | Middle Duplication | | | 2500 | 1.3k |
| 1615E | Purple Crayon | | | 2400 | 1.8k |
| 1610H | Squid Game | | | 3100 | 731 |
| 1608G | Alphabetic Tree | | | 3500 | 300 |
| 1593E | Gardener and Tree | | | 1600 | 15.1k |
| 1585E | Frequency Queries | | | 2400 | 1.2k |
| 1583H | Omkar and Tours | | | 3300 | 505 |
| 1575E | Eye-Pleasing City Park Tour | | | 2600 | 434 |
| 1575I | Illusions of the Desert | | | 2300 | 1.1k |
| 1555E | Boring Segments | | | 2100 | 4.7k |
| 1555F | Good Graph | | | 2700 | 1.1k |
| 1535D | Playoff Tournament | | | 1800 | 8.6k |
| 1535E | Gold Transfer | | | 2200 | 3.1k |
| 1528C | Trees of Tranquillity | | | 2300 | 3k |
| 1523C | Compression and Expansion | | | 1600 | 9.2k |
| 1521D | Nastia Plays with a Tree | | | 2500 | 2.4k |
| 1511C | Yet Another Card Deck | | | 1100 | 34.4k |
| 1508C | Complete the MST | | | 2500 | 1.8k |
| 1508E | Tree Calendar | | | 3100 | 453 |
| 1498F | Christmas Game | | | 2500 | 1.1k |
| 1495F | Squares | | | 3300 | 533 |
| 1494D | Dogeforces | | | 2300 | 2.9k |
| 1491H | Yuezheng Ling and Dynamic Tree | | | 3400 | 1.3k |
| 1486F | Pairs of Paths | | | 2600 | 875 |
| 1482H | Exam | | | 3400 | 778 |
| 1479D | Odd Mineral Resource | | | 2900 | 1.4k |
| 1467E | Distinctive Roots in a Tree | | | 2500 | 1.8k |
| 1466D | 13th Labour of Heracles | | | 1500 | 15.2k |
| 1464F | My Beautiful Madness | | | 3500 | 447 |
| 1458F | Range Diameter Sum | | | 3500 | 497 |
| 1452G | Game On Tree | | | 2700 | 579 |
| 1446C | Xor Tree | | | 2100 | 4.2k |
| 1439E | Cheat and Win | | | 3500 | 301 |
| 1437G | Death DBMS | | | 2600 | 1.3k |
| 1427F | Boring Card Game | | | 3200 | 418 |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1416D | Graph and Queries | | | 2600 | 2.9k |
| 1413F | Roads and Ramen | | | 2800 | 975 |
| 1408E | Avoid Rainbow Cycles | | | 2400 | 2.2k |
| 1403B | Spring cleaning | | | 2300 | 437 |
| 1399E1 | Weights Division (easy version) | | | 2000 | 6.4k |
| 1388D | Captain Flint and Treasure | | | 2000 | 7k |
| 1385F | Removing Leaves | | | 2300 | 2.9k |
| 1380E | Merging Towers | | | 2300 | 2.5k |
| 1368G | Shifting Dominoes | | | 3200 | 797 |
| 1344E | Train Tracks | | | 3100 | 685 |
| 1336F | Journey | | | 3500 | 284 |
| 1320E | Treeland and Viruses | | | 3000 | 1.1k |
| 1304E | 1-Trees and Queries | | | 2000 | 6k |