| 2208D1 | Tree Orientation (Easy Version) | | | 1800 | 4.8k |
| 2208D2 | Tree Orientation (Hard Version) | | | 2200 | 2.1k |
| 2187C | Jerry and Tom | | | 2300 | 1.5k |
| 2155F | Juan's Colorful Tree | | | 2800 | 745 |
| 2104G | Modulo 3 | | | 2700 | 553 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2081D | MST in Modulo Graph | | | 2600 | 1.2k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 2063F2 | Counting Is Not Fun (Hard Version) | | | 2700 | 951 |
| 2044G2 | Medium Demon Problem (hard version) | | | 1900 | 4k |
| 2029D | Cool Graph | | | 1900 | 4k |
| 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 |
| 1994D | Funny Game | | | 1900 | 7.7k |
| 1940C | Burenka and Pether | | | unrated | 44 |
| 1927F | Microcycle | | | 1900 | 5.6k |
| 1923E | Count Paths | | | 2000 | 5.3k |
| 1920F2 | Smooth Sailing (Hard Version) | | | 3000 | 668 |
| 1914G1 | Light Bulbs (Easy Version) | | | 2100 | 2.5k |
| 1873H | Mad City | | | 1700 | 9.7k |
| 1857G | Counting Graphs | | | 2000 | 5.6k |
| 1851G | Vlad and the Mountains | | | 2000 | 4.2k |
| 1788F | XOR, Tree, and Queries | | | 2500 | 1.2k |
| 1763F | Edge Queries | | | 3000 | 750 |
| 1761E | Make It Connected | | | 2400 | 2.2k |
| 1738D | Permutation Addicts | | | 1900 | 3.8k |
| 1738F | Connectivity Addicts | | | 2400 | 1.4k |
| 1726D | Edge Split | | | 2000 | 4.2k |
| 1707C | DFS Trees | | | 2400 | 2k |
| 1696F | Tree Recovery | | | 2600 | 1.2k |
| 1680F | Lenient Vertex Cover | | | 2600 | 979 |
| 1657F | Words on Tree | | | 2600 | 854 |
| 1648E | Air Reform | | | 3200 | 601 |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1615D | X(or)-mas Tree | | | 2200 | 2.2k |
| 1609D | Social Network | | | 1600 | 8.6k |
| 1559D1 | Mocha and Diana (Easy Version) | | | 1400 | 16.5k |
| 1559D2 | Mocha and Diana (Hard Version) | | | 2500 | 3.2k |
| 1555F | Good Graph | | | 2700 | 1.1k |
| 1515F | Phoenix and Earthquake | | | 2600 | 2.2k |
| 1508C | Complete the MST | | | 2500 | 1.8k |
| 1463E | Plan of Lectures | | | 2400 | 1.8k |
| 1416D | Graph and Queries | | | 2600 | 2.9k |
| 1408E | Avoid Rainbow Cycles | | | 2400 | 2.2k |
| 1408G | Clusterization Counting | | | 2700 | 1.4k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |
| 1278D | Segment Tree | | | 2100 | 4.4k |
| 1253F | Cheap Robot | | | 2500 | 2.4k |
| 1245D | Shichikuji and Power Grid | | | 1900 | 10.1k |
| 1220E | Tourism | | | 2200 | 3.1k |
| 1217F | Forced Online Queries Problem | | | 2600 | 744 |
| 1213G | Path Queries | | | 1800 | 9.9k |
| 1184E3 | Daleks' Invasion (hard) | | | 2400 | 698 |
| 1176E | Cover it! | | | 1700 | 14k |
| 1139C | Edgy Trees | | | 1500 | 17.4k |
| 1120D | Power Tree | | | 2500 | 1.8k |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 1023F | Mobile Phone Network | | | 2600 | 1.1k |
| 915F | Imbalance Value of a Tree | | | 2400 | 3.2k |
| 870E | Points, Lines and Ready-made Titles | | | 2300 | 1.3k |
| 859E | Desk Disorder | | | 2100 | 2.2k |
| 763A | Timofey and a tree | | | 1600 | 12.1k |
| 755C | PolandBall and Forest | | | 1300 | 15.4k |
| 733F | Drivers Dissatisfaction | | | 2200 | 1.4k |
| 698B | Fix a Tree | | | 1700 | 6.2k |
| 653E | Bear and Forgotten Tree 2 | | | 2400 | 1.8k |
| 652E | Pursuit For Artifacts | | | 2300 | 3k |
| 627F | Island Puzzle | | | 3400 | 271 |
| 609E | Minimum spanning tree for each edge | | | 2100 | 10.7k |
| 466E | Information Graph | | | 2100 | 2.7k |
| 436C | Dungeons and Candies | | | 1800 | 2.9k |
| 260D | Black and White Tree | | | 2100 | 1.7k |
| 97E | Leaders | | | 2200 | 452 |
| 87D | Beautiful Road | | | 2300 | 1.1k |
| 81E | Pairs | | | 2700 | 460 |
| 76A | Gift | | | 2200 | 2.5k |
| 25D | Roads not only in Berland | | | 1900 | 16.3k |