| 1010D | Mars rover | | | 2000 | 2.6k |
| 1010F | Tree | | | 3400 | 385 |
| 1006E | Military Problem | | | 1600 | 12k |
| 1000E | We Need More Bosses | | | 2100 | 7k |
| 982C | Cut 'em all! | | | 1500 | 16.6k |
| 980F | Cactus to Tree | | | 2900 | 232 |
| 962F | Simple Cycles Edges | | | 2400 | 1.7k |
| 958B2 | Maximum Control (medium) | | | 2200 | 765 |
| 930A | Peculiar apple-tree | | | 1500 | 8.6k |
| 923F | Public Service | | | 3200 | 143 |
| 915F | Imbalance Value of a Tree | | | 2400 | 3.2k |
| 911F | Tree Destruction | | | 2400 | 2.4k |
| 871E | Restore the Tree | | | 2900 | 204 |
| 870E | Points, Lines and Ready-made Titles | | | 2300 | 1.3k |
| 868E | Policeman and a Tree | | | 2700 | 569 |
| 864F | Cities Excursions | | | 2700 | 706 |
| 862B | Mahmoud and Ehab and the bipartiteness | | | 1300 | 27.1k |
| 859E | Desk Disorder | | | 2100 | 2.2k |
| 855G | Harry Vs Voldemort | | | 3300 | 415 |
| 852I | Dating | | | 2300 | 786 |
| 847L | Berland SU Computer Network | | | 2400 | 363 |
| 843C | Upgrading Tree | | | 2600 | 416 |
| 842C | Ilya And The Tree | | | 2000 | 3.8k |
| 842E | Nikita and game | | | 2800 | 513 |
| 839C | Journey | | | 1500 | 20.8k |
| 835F | Roads in the Kingdom | | | 2500 | 1.3k |
| 832D | Misha, Grisha and Underground | | | 1900 | 4.7k |
| 830D | Singer House | | | 2800 | 1k |
| 830E | Perpetual Motion Machine | | | 3100 | 373 |
| 827D | Best Edge Weight | | | 2700 | 1.5k |
| 825G | Tree Queries | | | 2500 | 1.5k |
| 812D | Sagheer and Kindergarten | | | 2700 | 382 |
| 802J1 | Send the Fool Further! (easy) | | | 1400 | 6.7k |
| 796D | Police Stations | | | 2100 | 7.8k |
| 786E | ALT | | | 3200 | 849 |
| 780C | Andryusha and Colored Balloons | | | 1600 | 10.3k |
| 776F | Sherlock's bet to Moriarty | | | 2800 | 543 |
| 767C | Garland | | | 2000 | 4.7k |
| 763A | Timofey and a tree | | | 1600 | 12.1k |
| 763D | Timofey and a flat tree | | | 2900 | 682 |
| 762F | Tree nesting | | | 2800 | 513 |
| 761E | Dasha and Puzzle | | | 2000 | 2.4k |
| 758E | Broken Tree | | | 2600 | 636 |
| 757G | Can Bash Save the Day? | | | 3400 | 660 |
| 755C | PolandBall and Forest | | | 1300 | 15.4k |
| 748F | Santa Clauses and a Soccer Championship | | | 2300 | 744 |
| 746G | New Roads | | | 2100 | 1.7k |
| 743D | Chloe and pleasant prizes | | | 1800 | 4.8k |
| 739B | Alyona and a tree | | | 1900 | 5.2k |
| 733F | Drivers Dissatisfaction | | | 2200 | 1.4k |
| 724G | Xor-matic Number of the Graph | | | 2600 | 1.6k |
| 708C | Centroids | | | 2300 | 4.5k |
| 700B | Connecting Universities | | | 1800 | 4.7k |
| 698B | Fix a Tree | | | 1700 | 6.2k |
| 690C2 | Brain Network (medium) | | | 1500 | 5.1k |
| 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 |
| 639B | Bear and Forgotten Tree 3 | | | 1600 | 7k |
| 639F | Bear and Chemistry | | | 3300 | 610 |
| 638C | Road Improvement | | | 1800 | 2.4k |
| 633F | The Chocolate Spree | | | 2600 | 1.4k |
| 632F | Magic Matrix | | | 2400 | 1.3k |
| 627D | Preorder Test | | | 2600 | 1k |
| 627F | Island Puzzle | | | 3400 | 271 |
| 613D | Kingdom and its Cities | | | 2800 | 4.3k |
| 609E | Minimum spanning tree for each edge | | | 2100 | 10.7k |
| 593D | Happy Tree Party | | | 2400 | 1.5k |
| 592D | Super M | | | 2200 | 3k |
| 580C | Kefa and Park | | | 1500 | 58k |
| 575B | Bribes | | | 2200 | 1.3k |
| 570D | Tree Requests | | | 2200 | 9.3k |
| 557E | Ann and Half-Palindrome | | | 2300 | 1.3k |
| 555E | Case of Computer Network | | | 2800 | 3.1k |
| 533B | Work Group | | | 2000 | 2.7k |
| 522A | Reposts | | | 1200 | 19.3k |
| 500D | New Year Santa Network | | | 1900 | 3.3k |
| 487E | Tourists | | | 3200 | 3k |
| 466E | Information Graph | | | 2100 | 2.7k |
| 436C | Dungeons and Candies | | | 1800 | 2.9k |
| 418D | Big Problems for Organizers | | | 2800 | 580 |
| 396C | On Changing Tree | | | unrated | 1.9k |
| 382D | Ksenia and Pawns | | | 2200 | 753 |
| 369C | Valera and Elections | | | 1600 | 12.3k |
| 343D | Water Tree | | | 2100 | 7.1k |
| 343E | Pumping Stations | | | 2900 | 960 |
| 317C | Balance | | | 2500 | 584 |
| 276E | Little Girl and Problem on Trees | | | 2100 | 1.9k |
| 260D | Black and White Tree | | | 2100 | 1.7k |
| 237D | T-decomposition | | | 2000 | 645 |
| 231E | Cactus | | | 2100 | 2.4k |
| 219D | Choosing Capital for Treeland | | | 1700 | 13k |
| 193A | Cutting Figure | | | 1700 | 4.7k |
| 152E | Garden | | | 2500 | 610 |
| 117E | Tree or not Tree | | | 2900 | 451 |
| 115A | Party | | | 900 | 45k |
| 97E | Leaders | | | 2200 | 452 |
| 87D | Beautiful Road | | | 2300 | 1.1k |
| 81E | Pairs | | | 2700 | 460 |