| 1790G | Tokens on Graph | | | 2300 | 1.3k |
| 1788E | Sum Over Zero | | | 2200 | 3.4k |
| 1788F | XOR, Tree, and Queries | | | 2500 | 1.2k |
| 1787D | Game on Axis | | | 1900 | 3.9k |
| 1783F | Double Sort II | | | 2500 | 1.4k |
| 1778E | The Tree Has Fallen! | | | 2500 | 1.2k |
| 1778F | Maximizing Root | | | 2600 | 964 |
| 1777D | Score of a Tree | | | 1900 | 4.9k |
| 1777E | Edge Reverse | | | 2200 | 2.4k |
| 1775D | Friendly Spiders | | | 1800 | 8.9k |
| 1774E | Two Chess Pieces | | | 1900 | 4k |
| 1772F | Copy of a Copy of a Copy | | | 2000 | 2.9k |
| 1771D | Hossam and (sub-)palindromic tree | | | 2100 | 3.3k |
| 1770D | Koxia and Game | | | 2000 | 4.5k |
| 1770E | Koxia and Tree | | | 2400 | 1.6k |
| 1768D | Lucky Permutation | | | 1800 | 9.3k |
| 1764F | Doremy's Experimental Tree | | | 2500 | 1.3k |
| 1763F | Edge Queries | | | 3000 | 750 |
| 1761C | Set Construction | | | 1400 | 10.8k |
| 1760G | SlavicG's Favorite Problem | | | 1700 | 10.7k |
| 1758E | Tick, Tock | | | 2500 | 1.1k |
| 1753D | The Beach | | | 2400 | 2.1k |
| 1749E | Cactus Wall | | | 2400 | 2.1k |
| 1749F | Distance to the Path | | | 2800 | 642 |
| 1746D | Paths on the Tree | | | 1900 | 5.2k |
| 1741D | Masha and a Beautiful Tree | | | 1300 | 18.7k |
| 1741G | Kirill and Company | | | 2200 | 2k |
| 1740E | Hanging Hearts | | | 1800 | 5.1k |
| 1739D | Reset K Edges | | | 1900 | 6.4k |
| 1738D | Permutation Addicts | | | 1900 | 3.8k |
| 1735C | Phase Shift | | | 1400 | 11k |
| 1726D | Edge Split | | | 2000 | 4.2k |
| 1722F | L-shapes | | | 1700 | 8.1k |
| 1721D | Maximum AND | | | 1800 | 7.8k |
| 1721E | Prefix Function Queries | | | 2200 | 2.7k |
| 1721F | Matching Reduction | | | 2800 | 641 |
| 1716E | Swap and Maximum Block | | | 2500 | 1.4k |
| 1714G | Path Prefixes | | | 1700 | 9.9k |
| 1712F | Triameter | | | 3200 | 508 |
| 1709E | XOR Tree | | | 2400 | 4.2k |
| 1707C | DFS Trees | | | 2400 | 2k |
| 1707D | Partial Virtual Trees | | | 3000 | 997 |
| 1706E | Qpwoeirut and Vertices | | | 2300 | 4k |
| 1702E | Split Into Two Sets | | | 1600 | 18.7k |
| 1702G1 | Passable Paths (easy version) | | | 1900 | 6.5k |
| 1702G2 | Passable Paths (hard version) | | | 2000 | 6.1k |
| 1696F | Tree Recovery | | | 2600 | 1.2k |
| 1695D1 | Tree Queries (Easy Version) | | | 2200 | 2.5k |
| 1695D2 | Tree Queries (Hard Version) | | | 2300 | 2.3k |
| 1695E | Ambiguous Dominoes | | | 2700 | 543 |
| 1693B | Fake Plastic Trees | | | 1700 | 9.7k |
| 1691E | Number of Groups | | | 2300 | 2.2k |
| 1691F | K-Set Tree | | | 2500 | 1.2k |
| 1689C | Infected Tree | | | 1600 | 13.9k |
| 1689E | ANDfinity | | | 2500 | 1.4k |
| 1685D1 | Permutation Weight (Easy Version) | | | 2800 | 535 |
| 1684H | Hard Cut | | | 3400 | 305 |
| 1682E | Unordered Swaps | | | 2700 | 777 |
| 1681D | Required Length | | | 1700 | 10.9k |
| 1681F | Unique Occurrences | | | 2300 | 2.4k |
| 1680F | Lenient Vertex Cover | | | 2600 | 979 |
| 1679D | Toss a Coin to Your Graph... | | | 1900 | 6k |
| 1677C | Tokitsukaze and Two Colorful Tapes | | | 1900 | 4.1k |
| 1676G | White-Black Balanced Subtrees | | | 1300 | 25.6k |
| 1675F | Vlad and Unfinished Business | | | 1800 | 6.4k |
| 1674G | Remove Directed Edges | | | 2000 | 3k |
| 1672F2 | Checker for Array Shuffling | | | 2800 | 956 |
| 1670C | Where is the Pizza? | | | 1400 | 11.1k |
| 1670E | Hemose on the Tree | | | 2200 | 2k |
| 1669G | Fall Down | | | 1200 | 22.1k |
| 1667D | Edge Elimination | | | 2900 | 846 |
| 1666L | Labyrinth | | | 1800 | 3.7k |
| 1662F | Antennas | | | unrated | 1.3k |
| 1662O | Circular Maze | | | unrated | 1.6k |
| 1661B | Getting Zero | | | 1300 | 21.1k |
| 1659E | AND-MEX Walk | | | 2200 | 2k |
| 1659F | Tree and Permutation Game | | | 3000 | 255 |
| 1657F | Words on Tree | | | 2600 | 854 |
| 1656E | Equal Tree Sums | | | 2200 | 3.9k |
| 1654D | Potion Brewing Class | | | 2100 | 3.1k |
| 1654G | Snowy Mountain | | | 2900 | 474 |
| 1651D | Nearest Excluded Points | | | 1900 | 6.7k |
| 1651E | Sum of Matchings | | | 2600 | 669 |
| 1650G | Counting Shortcuts | | | 2100 | 3k |
| 1648E | Air Reform | | | 3200 | 601 |
| 1648F | Two Avenues | | | 3500 | 190 |
| 1647E | Madoka and the Sixth-graders | | | 2500 | 1.1k |
| 1646D | Weight the Tree | | | 2000 | 4.5k |
| 1637F | Towers | | | 2500 | 2.2k |
| 1635E | Cars | | | 2200 | 2.9k |
| 1634E | Fair Share | | | 2400 | 2.3k |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1632E1 | Distance Tree (easy version) | | | 2400 | 1.4k |
| 1632E2 | Distance Tree (hard version) | | | 2700 | 1.3k |
| 1627C | Not Assigning | | | 1400 | 16.4k |
| 1626E | Black and White Tree | | | 2400 | 1.9k |
| 1625E1 | Cats on the Upgrade (easy version) | | | 2500 | 1.2k |
| 1625E2 | Cats on the Upgrade (hard version) | | | 2800 | 705 |
| 1624G | MinOr Tree | | | 1900 | 7.9k |
| 1623B | Game on Ranges | | | 1100 | 14.7k |