| 1611D | Weights Assignment For Tree Edges | | | 1500 | 11.7k |
| 1611E1 | Escape The Maze (easy version) | | | 1700 | 8.5k |
| 1611E2 | Escape The Maze (hard version) | | | 1900 | 4.4k |
| 1610H | Squid Game | | | 3100 | 731 |
| 1610I | Mashtali vs AtCoder | | | 3100 | 451 |
| 1609D | Social Network | | | 1600 | 8.6k |
| 1608G | Alphabetic Tree | | | 3500 | 300 |
| 1606F | Tree Queries | | | 2800 | 781 |
| 1605D | Treelabeling | | | 2100 | 3.3k |
| 1594E2 | Rubik's Cube Coloring (hard version) | | | 2300 | 1.7k |
| 1593E | Gardener and Tree | | | 1600 | 15.1k |
| 1592C | Bakry and Partitioning | | | 1700 | 9.3k |
| 1592D | Hemose in ICPC ? | | | 2300 | 2.7k |
| 1585E | Frequency Queries | | | 2400 | 1.2k |
| 1585G | Poachers | | | 2500 | 339 |
| 1583B | Omkar and Heavenly Tree | | | 1200 | 13.4k |
| 1583E | Moment of Bloom | | | 2200 | 2.5k |
| 1583H | Omkar and Tours | | | 3300 | 505 |
| 1580B | Mathematics Curriculum | | | 2600 | 1.4k |
| 1580D | Subsequence | | | 2900 | 1.2k |
| 1575E | Eye-Pleasing City Park Tour | | | 2600 | 434 |
| 1575I | Illusions of the Desert | | | 2300 | 1.1k |
| 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 |
| 1555E | Boring Segments | | | 2100 | 4.7k |
| 1555F | Good Graph | | | 2700 | 1.1k |
| 1553H | XOR and Distance | | | 2900 | 909 |
| 1551F | Equidistant Vertices | | | 2200 | 2.2k |
| 1547G | How Many Paths? | | | 2100 | 3.7k |
| 1540B | Tree Array | | | 2300 | 3.1k |
| 1535D | Playoff Tournament | | | 1800 | 8.6k |
| 1535E | Gold Transfer | | | 2200 | 3.1k |
| 1534D | Lost Tree | | | 1800 | 6.9k |
| 1534H | Lost Nodes | | | 3500 | 314 |
| 1528A | Parsa's Humongous Tree | | | 1600 | 19.8k |
| 1528C | Trees of Tranquillity | | | 2300 | 3k |
| 1528E | Mashtali and Hagh Trees | | | 2900 | 640 |
| 1527D | MEX Tree | | | 2400 | 2.3k |
| 1523C | Compression and Expansion | | | 1600 | 9.2k |
| 1521D | Nastia Plays with a Tree | | | 2500 | 2.4k |
| 1519E | Off by One | | | 2700 | 943 |
| 1517F | Reunion | | | 3200 | 702 |
| 1515F | Phoenix and Earthquake | | | 2600 | 2.2k |
| 1511C | Yet Another Card Deck | | | 1100 | 34.4k |
| 1508C | Complete the MST | | | 2500 | 1.8k |
| 1508E | Tree Calendar | | | 3100 | 453 |
| 1499F | Diameter Cuts | | | 2400 | 1.7k |
| 1498F | Christmas Game | | | 2500 | 1.1k |
| 1495D | BFS Trees | | | 2600 | 1.6k |
| 1495F | Squares | | | 3300 | 533 |
| 1494D | Dogeforces | | | 2300 | 2.9k |
| 1491E | Fib-tree | | | 2400 | 2.4k |
| 1491H | Yuezheng Ling and Dynamic Tree | | | 3400 | 1.3k |
| 1486F | Pairs of Paths | | | 2600 | 875 |
| 1485E | Move and Swap | | | 2500 | 1.6k |
| 1482H | Exam | | | 3400 | 778 |
| 1481F | AB Tree | | | 3100 | 809 |
| 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 |
| 1463E | Plan of Lectures | | | 2400 | 1.8k |
| 1458F | Range Diameter Sum | | | 3500 | 497 |
| 1454E | Number of Simple Paths | | | 2000 | 6.8k |
| 1453E | Dog Snacks | | | 2300 | 2.3k |
| 1452G | Game On Tree | | | 2700 | 579 |
| 1450G | Communism | | | 3500 | 409 |
| 1446C | Xor Tree | | | 2100 | 4.2k |
| 1444E | Finding the Vertex | | | 3500 | 171 |
| 1442E | Black, White and Grey Tree | | | 3000 | 805 |
| 1439E | Cheat and Win | | | 3500 | 301 |
| 1438F | Olha and Igor | | | 3000 | 810 |
| 1437D | Minimal Height Tree | | | 1600 | 14.6k |
| 1437G | Death DBMS | | | 2600 | 1.3k |
| 1436D | Bandit in a City | | | 1900 | 6.6k |
| 1427F | Boring Card Game | | | 3200 | 418 |
| 1423C | Dušan's Railway | | | 3500 | 222 |
| 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 |
| 1408G | Clusterization Counting | | | 2700 | 1.4k |
| 1406C | Link Cut Centroids | | | 1700 | 12k |
| 1404B | Tree Tag | | | 1900 | 8.3k |
| 1403B | Spring cleaning | | | 2300 | 437 |
| 1402C | Star Trek | | | 2600 | 271 |
| 1401D | Maximum Distributed Tree | | | 1800 | 10.7k |
| 1399E1 | Weights Division (easy version) | | | 2000 | 6.4k |
| 1399E2 | Weights Division (hard version) | | | 2200 | 2.6k |
| 1396E | Distance Matching | | | 3200 | 441 |
| 1394D | Boboniu and Jianghu | | | 2800 | 1.3k |
| 1391E | Pairs of Pairs | | | 2600 | 2.1k |
| 1389G | Directing Edges | | | 2800 | 540 |
| 1388C | Uncle Bogdan and Country Happiness | | | 1800 | 10.5k |
| 1388D | Captain Flint and Treasure | | | 2000 | 7k |
| 1387B1 | Village (Minimum) | | | 2100 | 2k |
| 1387B2 | Village (Maximum) | | | 2500 | 1.4k |
| 1385F | Removing Leaves | | | 2300 | 2.9k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |