| 1179C | Serge and Dining Room | | | 2200 | 2.5k |
| 1175E | Minimal Segment Cover | | | 2200 | 4.7k |
| 1153D | Serval and Rooted Tree | | | 1900 | 5.6k |
| 1152D | Neko and Aki's Prank | | | 2100 | 2.6k |
| 1141G | Privatization of Roads in Treeland | | | 1900 | 2.6k |
| 1120D | Power Tree | | | 2500 | 1.8k |
| 1098A | Sum in the tree | | | 1600 | 9.7k |
| 1098C | Construct a tree | | | 2400 | 1.2k |
| 1092E | Minimal Diameter Forest | | | 2000 | 2.2k |
| 1088E | Ehab and a component choosing problem | | | 2400 | 1.6k |
| 1073F | Choosing Two Paths | | | 2500 | 668 |
| 1062E | Company | | | 2300 | 2.1k |
| 1059E | Split the Tree | | | 2400 | 1.7k |
| 1056D | Decorate Apple Tree | | | 1600 | 6.8k |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 1004E | Sonya and Ice Cream | | | 2400 | 1.3k |
| 990F | Flow Control | | | 2400 | 1.1k |
| 982C | Cut 'em all! | | | 1500 | 16.6k |
| 980E | The Number Games | | | 2200 | 2.4k |
| 979D | Kuro and GCD and XOR and SUM | | | 2200 | 2.3k |
| 965E | Short Code | | | 2200 | 2k |
| 963B | Destruction of a Tree | | | 2000 | 3k |
| 958B2 | Maximum Control (medium) | | | 2200 | 765 |
| 923C | Perfect Security | | | 1800 | 4.8k |
| 911F | Tree Destruction | | | 2400 | 2.4k |
| 886C | Petya and Catacombs | | | 1300 | 5.7k |
| 871E | Restore the Tree | | | 2900 | 204 |
| 846E | Chemistry in Berland | | | 2300 | 1.1k |
| 827B | High Load | | | 1800 | 3.7k |
| 821C | Okabe and Boxes | | | 1500 | 8k |
| 814D | An overnight dance in discotheque | | | 2000 | 2.6k |
| 780C | Andryusha and Colored Balloons | | | 1600 | 10.3k |
| 767C | Garland | | | 2000 | 4.7k |
| 765E | Tree Folding | | | 2200 | 1.4k |
| 761E | Dasha and Puzzle | | | 2000 | 2.4k |
| 758E | Broken Tree | | | 2600 | 636 |
| 722D | Generating Sets | | | 1900 | 3.4k |
| 708C | Centroids | | | 2300 | 4.5k |
| 650E | Clockwork Bomb | | | 3200 | 1.1k |
| 638C | Road Improvement | | | 1800 | 2.4k |
| 627D | Preorder Test | | | 2600 | 1k |
| 622E | Ants in Leaves | | | 2200 | 2.5k |
| 618D | Hamiltonian Spanning Tree | | | 2200 | 2.1k |
| 615C | Running Track | | | 2000 | 2.5k |
| 576B | Invariance of Tree | | | 2100 | 1.9k |
| 533A | Berland Miners | | | 3000 | 618 |
| 526G | Spiders Evil Plan | | | 3300 | 902 |
| 501C | Misha and Forest | | | 1500 | 6.1k |
| 457F | An easy problem about trees | | | 3200 | 128 |
| 436C | Dungeons and Candies | | | 1800 | 2.9k |
| 429C | Guess the Tree | | | 2300 | 1.1k |
| 414D | Mashmokh and Water Tanks | | | 2300 | 777 |
| 343E | Pumping Stations | | | 2900 | 960 |
| 321C | Ciel the Commander | | | 2100 | 9.8k |
| 274B | Zero Tree | | | 1800 | 5.7k |
| 260D | Black and White Tree | | | 2100 | 1.7k |
| 238C | World Eater Brothers | | | 2100 | 1.4k |
| 237D | T-decomposition | | | 2000 | 645 |
| 120F | Spiders | | | 1400 | 4.2k |
| 101D | Castle | | | 2300 | 813 |
| 77C | Beavermuncher-0xFF | | | 2100 | 1.3k |
| 75D | Big Maximum Sum | | | 2000 | 2.1k |
| 61D | Eternal Victory | | | 1800 | 7.8k |
| 37C | Old Berland Language | | | 1900 | 2.3k |