| 1851F | Lisa and the Martians | | | 1800 | 7.8k |
| 1849F | XOR Partition | | | 2700 | 911 |
| 1843F1 | Omsk Metro (simple version) | | | 1800 | 6.5k |
| 1842F | Tenzing and Tree | | | 2500 | 1.9k |
| 1833G | Ksyusha and Chinchilla | | | 1800 | 6.5k |
| 1827B1 | Range Sorting (Easy Version) | | | 2000 | 4.6k |
| 1827D | Two Centroids | | | 2800 | 1k |
| 1827E | Bus Routes | | | 3400 | 1k |
| 1824C | LuoTianyi and XOR-Tree | | | 2500 | 1.7k |
| 1805D | A Wide, Wide Graph | | | 1800 | 9.6k |
| 1796E | Colored Subgraphs | | | 2500 | 1.1k |
| 1795F | Blocking Chips | | | 2400 | 1.4k |
| 1794E | Labeling the Tree with Distances | | | 2400 | 1.6k |
| 1790F | Timofey and Black-White Tree | | | 2100 | 4.2k |
| 1788F | XOR, Tree, and Queries | | | 2500 | 1.2k |
| 1776M | Parmigiana With Seafood | | | 3000 | 514 |
| 1774E | Two Chess Pieces | | | 1900 | 4k |
| 1761E | Make It Connected | | | 2400 | 2.2k |
| 1746D | Paths on the Tree | | | 1900 | 5.2k |
| 1740E | Hanging Hearts | | | 1800 | 5.1k |
| 1739D | Reset K Edges | | | 1900 | 6.4k |
| 1738F | Connectivity Addicts | | | 2400 | 1.4k |
| 1718D | Permutation for Burenka | | | 3300 | 449 |
| 1709E | XOR Tree | | | 2400 | 4.2k |
| 1707C | DFS Trees | | | 2400 | 2k |
| 1706E | Qpwoeirut and Vertices | | | 2300 | 4k |
| 1698E | PermutationForces II | | | 2300 | 1.9k |
| 1695D1 | Tree Queries (Easy Version) | | | 2200 | 2.5k |
| 1695D2 | Tree Queries (Hard Version) | | | 2300 | 2.3k |
| 1693B | Fake Plastic Trees | | | 1700 | 9.7k |
| 1682E | Unordered Swaps | | | 2700 | 777 |
| 1675F | Vlad and Unfinished Business | | | 1800 | 6.4k |
| 1665C | Tree Infection | | | 1600 | 10k |
| 1662G | Gastronomic Event | | | unrated | 574 |
| 1654G | Snowy Mountain | | | 2900 | 474 |
| 1637F | Towers | | | 2500 | 2.2k |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1626E | Black and White Tree | | | 2400 | 1.9k |
| 1623E | Middle Duplication | | | 2500 | 1.3k |
| 1615E | Purple Crayon | | | 2400 | 1.8k |
| 1611E1 | Escape The Maze (easy version) | | | 1700 | 8.5k |
| 1611E2 | Escape The Maze (hard version) | | | 1900 | 4.4k |
| 1610H | Squid Game | | | 3100 | 731 |
| 1609D | Social Network | | | 1600 | 8.6k |
| 1605D | Treelabeling | | | 2100 | 3.3k |
| 1593E | Gardener and Tree | | | 1600 | 15.1k |
| 1583E | Moment of Bloom | | | 2200 | 2.5k |
| 1580D | Subsequence | | | 2900 | 1.2k |
| 1566E | Buds Re-hanging | | | 2000 | 4.5k |
| 1559D1 | Mocha and Diana (Easy Version) | | | 1400 | 16.5k |
| 1559D2 | Mocha and Diana (Hard Version) | | | 2500 | 3.2k |
| 1535E | Gold Transfer | | | 2200 | 3.1k |
| 1528A | Parsa's Humongous Tree | | | 1600 | 19.8k |
| 1528C | Trees of Tranquillity | | | 2300 | 3k |
| 1523C | Compression and Expansion | | | 1600 | 9.2k |
| 1521D | Nastia Plays with a Tree | | | 2500 | 2.4k |
| 1515F | Phoenix and Earthquake | | | 2600 | 2.2k |
| 1508C | Complete the MST | | | 2500 | 1.8k |
| 1494D | Dogeforces | | | 2300 | 2.9k |
| 1485E | Move and Swap | | | 2500 | 1.6k |
| 1481F | AB Tree | | | 3100 | 809 |
| 1466D | 13th Labour of Heracles | | | 1500 | 15.2k |
| 1453E | Dog Snacks | | | 2300 | 2.3k |
| 1452G | Game On Tree | | | 2700 | 579 |
| 1442E | Black, White and Grey Tree | | | 3000 | 805 |
| 1437D | Minimal Height Tree | | | 1600 | 14.6k |
| 1436D | Bandit in a City | | | 1900 | 6.6k |
| 1427F | Boring Card Game | | | 3200 | 418 |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1408E | Avoid Rainbow Cycles | | | 2400 | 2.2k |
| 1401D | Maximum Distributed Tree | | | 1800 | 10.7k |
| 1399E1 | Weights Division (easy version) | | | 2000 | 6.4k |
| 1399E2 | Weights Division (hard version) | | | 2200 | 2.6k |
| 1394D | Boboniu and Jianghu | | | 2800 | 1.3k |
| 1391E | Pairs of Pairs | | | 2600 | 2.1k |
| 1388C | Uncle Bogdan and Country Happiness | | | 1800 | 10.5k |
| 1388D | Captain Flint and Treasure | | | 2000 | 7k |
| 1387B1 | Village (Minimum) | | | 2100 | 2k |
| 1385F | Removing Leaves | | | 2300 | 2.9k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |
| 1381D | The Majestic Brown Tree Snake | | | 3000 | 832 |
| 1369D | TediousLee | | | 1900 | 9.3k |
| 1364D | Ehab's Last Corollary | | | 2100 | 5.1k |
| 1363E | Tree Shuffling | | | 2000 | 7.6k |
| 1361D | Johnny and James | | | 2900 | 388 |
| 1338B | Edge Weight Assignment | | | 1800 | 9.7k |
| 1336A | Linova and Kingdom | | | 1600 | 25.5k |
| 1325C | Ehab and Path-etic MEXs | | | 1500 | 17.9k |
| 1296F | Berland Beauty | | | 2100 | 3.1k |
| 1294F | Three Paths on a Tree | | | 2000 | 7.2k |
| 1292C | Xenon's Attack on the Gangs | | | 2300 | 2.4k |
| 1292D | Chaotic V. | | | 2700 | 1.1k |
| 1286B | Numbers on Tree | | | 1800 | 5.7k |
| 1285D | Dr. Evil Underscores | | | 1900 | 8.7k |
| 1283F | DIY Garland | | | 2200 | 2.2k |
| 1280C | Jeremy Bearimy | | | 2000 | 3.1k |
| 1280D | Miss Punyverse | | | 2500 | 1.3k |
| 1245D | Shichikuji and Power Grid | | | 1900 | 10.1k |
| 1225F | Tree Factory | | | 2500 | 1k |
| 1220E | Tourism | | | 2200 | 3.1k |