| 715C | Digit Tree | | | 2700 | 2.7k |
| 708C | Centroids | | | 2300 | 4.5k |
| 700B | Connecting Universities | | | 1800 | 4.7k |
| 698B | Fix a Tree | | | 1700 | 6.2k |
| 696B | Puzzles | | | 1700 | 3.9k |
| 690C2 | Brain Network (medium) | | | 1500 | 5.1k |
| 685B | Kay and Snowflake | | | 1900 | 5.6k |
| 682C | Alyona and the Tree | | | 1600 | 8.2k |
| 681D | Gifts by the List | | | 2000 | 1.9k |
| 653E | Bear and Forgotten Tree 2 | | | 2400 | 1.8k |
| 652E | Pursuit For Artifacts | | | 2300 | 3k |
| 650E | Clockwork Bomb | | | 3200 | 1.1k |
| 639F | Bear and Chemistry | | | 3300 | 610 |
| 638C | Road Improvement | | | 1800 | 2.4k |
| 633F | The Chocolate Spree | | | 2600 | 1.4k |
| 629E | Famil Door and Roads | | | 2300 | 1.2k |
| 627D | Preorder Test | | | 2600 | 1k |
| 627F | Island Puzzle | | | 3400 | 271 |
| 622E | Ants in Leaves | | | 2200 | 2.5k |
| 618D | Hamiltonian Spanning Tree | | | 2200 | 2.1k |
| 613D | Kingdom and its Cities | | | 2800 | 4.3k |
| 609E | Minimum spanning tree for each edge | | | 2100 | 10.7k |
| 601D | Acyclic Organic Compounds | | | 2400 | 1.3k |
| 600E | Lomsat gelral | | | 2300 | 19.2k |
| 593D | Happy Tree Party | | | 2400 | 1.5k |
| 592D | Super M | | | 2200 | 3k |
| 580C | Kefa and Park | | | 1500 | 58k |
| 576B | Invariance of Tree | | | 2100 | 1.9k |
| 575B | Bribes | | | 2200 | 1.3k |
| 573C | Bear and Drawing | | | 2300 | 1.1k |
| 570D | Tree Requests | | | 2200 | 9.3k |
| 566A | Matching Names | | | 2300 | 1.1k |
| 566C | Logistical Questions | | | 3000 | 955 |
| 555E | Case of Computer Network | | | 2800 | 3.1k |
| 538E | Demiurges Play Again | | | 2200 | 1.7k |
| 533A | Berland Miners | | | 3000 | 618 |
| 533B | Work Group | | | 2000 | 2.7k |
| 522A | Reposts | | | 1200 | 19.3k |
| 519E | A and B and Lecture Rooms | | | 2100 | 8.9k |
| 516D | Drazil and Morning Exercise | | | 2800 | 1.6k |
| 504E | Misha and LCP on Tree | | | 3000 | 1.1k |
| 500D | New Year Santa Network | | | 1900 | 3.3k |
| 494D | Birthday | | | 2700 | 712 |
| 490F | Treeland Tour | | | 2200 | 2k |
| 487E | Tourists | | | 3200 | 3k |
| 486D | Valid Sets | | | 2100 | 4.4k |
| 472D | Design Tutorial: Inverse the Problem | | | 1900 | 6.7k |
| 466E | Information Graph | | | 2100 | 2.7k |
| 463E | Caisa and Tree | | | 2100 | 1.8k |
| 461B | Appleman and Tree | | | 2000 | 7.3k |
| 455B | A Lot of Games | | | 1900 | 7.1k |
| 455C | Civilization | | | 2100 | 6.6k |
| 429A | Xor-tree | | | 1300 | 12.4k |
| 406D | Hill Climbing | | | 2200 | 1.3k |
| 383C | Propagating tree | | | 2000 | 7.8k |
| 382D | Ksenia and Pawns | | | 2200 | 753 |
| 375D | Tree and Queries | | | 2400 | 9.3k |
| 372D | Choosing Subtree is Fun | | | 2600 | 1.2k |
| 369C | Valera and Elections | | | 1600 | 12.3k |
| 348B | Apple Tree | | | 2100 | 2.3k |
| 348E | Pilgrims | | | 2800 | 637 |
| 343D | Water Tree | | | 2100 | 7.1k |
| 343E | Pumping Stations | | | 2900 | 960 |
| 337D | Book of Evil | | | 2000 | 7.1k |
| 321C | Ciel the Commander | | | 2100 | 9.8k |
| 317C | Balance | | | 2500 | 584 |
| 288D | Polo the Penguin and Trees | | | 2400 | 858 |
| 274B | Zero Tree | | | 1800 | 5.7k |
| 258E | Little Elephant and Tree | | | 2400 | 1.4k |
| 251E | Tree and Table | | | 3000 | 211 |
| 238C | World Eater Brothers | | | 2100 | 1.4k |
| 237D | T-decomposition | | | 2000 | 645 |
| 231E | Cactus | | | 2100 | 2.4k |
| 219D | Choosing Capital for Treeland | | | 1700 | 13k |
| 212E | IT Restaurants | | | 1500 | 2.2k |
| 208E | Blood Cousins | | | 2100 | 9.4k |
| 191C | Fools and Roads | | | 1900 | 9.8k |
| 176E | Archaeology | | | 3100 | 1.7k |
| 163E | e-Government | | | 2800 | 2.3k |
| 161D | Distance in Tree | | | 1800 | 20k |
| 123E | Maze | | | 2500 | 842 |
| 115A | Party | | | 900 | 45k |
| 97E | Leaders | | | 2200 | 452 |
| 87D | Beautiful Road | | | 2300 | 1.1k |
| 85C | Petya and Tree | | | 2200 | 642 |
| 81E | Pairs | | | 2700 | 460 |
| 77C | Beavermuncher-0xFF | | | 2100 | 1.3k |
| 61D | Eternal Victory | | | 1800 | 7.8k |
| 51F | Caterpillar | | | 2800 | 845 |
| 42E | Baldman and the military | | | 2700 | 284 |
| 29D | Ant on the Tree | | | 2000 | 3k |
| 22E | Scheme | | | 2300 | 2.2k |
| 14D | Two Paths | | | 1900 | 5.4k |