| 2114E | Kirei Attacks the Estate | | | 1400 | 14.4k |
| 2113E | From Kazan with Love | | | 2800 | 430 |
| 2112D | Reachability and Tree | | | 1700 | 9.8k |
| 2112E | Tree Colorings | | | 2200 | 3.5k |
| 2108E | Spruce Dispute | | | 2600 | 922 |
| 2107D | Apple Tree Traversing | | | 2100 | 3.6k |
| 2107E | Ain and Apple Tree | | | 2600 | 957 |
| 2106G1 | Baudelaire (easy version) | | | 2200 | 1.7k |
| 2106G2 | Baudelaire (hard version) | | | 2500 | 647 |
| 2104G | Modulo 3 | | | 2700 | 553 |
| 2101E | Kia Bakes a Cake | | | 3100 | 2k |
| 2101F | Shoo Shatters the Sunshine | | | 3300 | 168 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2093G | Shorten the Array | | | 1900 | 4k |
| 2081D | MST in Modulo Graph | | | 2600 | 1.2k |
| 2071C | Trapmigiano Reggiano | | | 1700 | 9.9k |
| 2071E | LeaFall | | | 2600 | 840 |
| 2070D | Tree Jumps | | | 1600 | 11.5k |
| 2068D | Morse Code | | | 3100 | 271 |
| 2065F | Skibidus and Slay | | | 1700 | 7.3k |
| 2064D | Eating | | | 1900 | 6k |
| 2063C | Remove Exactly Two | | | 1600 | 15.1k |
| 2063E | Triangle Tree | | | 2300 | 2.4k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 2063F2 | Counting Is Not Fun (Hard Version) | | | 2700 | 951 |
| 2062D | Balanced Tree | | | 2200 | 3.6k |
| 2062E1 | The Game (Easy Version) | | | 2000 | 4.4k |
| 2062E2 | The Game (Hard Version) | | | 3000 | 464 |
| 2053E | Resourceful Caterpillar Sequence | | | 1900 | 4.6k |
| 2052M | Managing Cluster | | | 2700 | 403 |
| 2050G | Tree Destruction | | | 1900 | 5.5k |
| 2048F | Kevin and Math Class | | | 2500 | 1.3k |
| 2044G1 | Medium Demon Problem (easy version) | | | 1700 | 7.6k |
| 2044G2 | Medium Demon Problem (hard version) | | | 1900 | 4k |
| 2042E | Vertex Pairs | | | 2900 | 535 |
| 2041I | Auto Complete | | | 2300 | 688 |
| 2040D | Non Prime Tree | | | 1900 | 5.9k |
| 2040E | Control of Randomness | | | 2100 | 2.8k |
| 2035F | Tree Operations | | | 2500 | 1.1k |
| 2035G1 | Go Learn! (Easy Version) | | | 3300 | 175 |
| 2033G | Sakurako and Chefir | | | 2200 | 2k |
| 2032D | Genokraken | | | 1800 | 6.3k |
| 2031E | Penchick and Chloe's Trees | | | 2100 | 2.8k |
| 2029D | Cool Graph | | | 1900 | 4k |
| 2028E | Alice's Adventures in the Rabbit Hole | | | 2300 | 2k |
| 2026F | Bermart Ice Cream | | | 2700 | 413 |
| 2025F | Choose Your Queries | | | 2700 | 1.1k |
| 2023E | Tree of Life | | | 3300 | 194 |
| 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 |
| 2018C | Tree Pruning | | | 1700 | 10.2k |
| 2014F | Sheriff's Defense | | | 2000 | 5.3k |
| 2013F1 | Game in Tree (Easy Version) | | | 2700 | 679 |
| 2013F2 | Game in Tree (Hard Version) | | | 3500 | 171 |
| 2006A | Iris and Game on the Tree | | | 1700 | 9.8k |
| 2006B | Iris and the Tree | | | 1800 | 4.4k |
| 2006E | Iris's Full Binary Tree | | | 3100 | 328 |
| 2002D1 | DFS Checker (Easy Version) | | | 1900 | 5.2k |
| 2002D2 | DFS Checker (Hard Version) | | | 2300 | 2.9k |
| 2001C | Guess The Tree | | | 1500 | 13.1k |
| 2001E1 | Deterministic Heap (Easy Version) | | | 2400 | 1.6k |
| 2001E2 | Deterministic Heap (Hard Version) | | | 2900 | 302 |
| 1997D | Maximize the Root | | | 1500 | 16.3k |
| 1994D | Funny Game | | | 1900 | 7.7k |
| 1994E | Wooden Game | | | 2000 | 5.7k |
| 1994F | Stardew Valley | | | 2500 | 1.6k |
| 1990E1 | Catch the Mole(Easy Version) | | | 2500 | 1.2k |
| 1990E2 | Catch the Mole(Hard Version) | | | 2600 | 1.2k |
| 1988D | The Omnipotent Monster Killer | | | 2000 | 6.1k |
| 1987E | Wonderful Tree! | | | 2000 | 4.2k |
| 1987G1 | Spinning Round (Easy Version) | | | 2900 | 361 |
| 1987G2 | Spinning Round (Hard Version) | | | 3500 | 255 |
| 1986F | Non-academic Problem | | | 1900 | 6.7k |
| 1984E | Shuffle | | | 2400 | 1.9k |
| 1983G | Your Loss | | | 3000 | 325 |
| 1981F | Turtle and Paths on a Tree | | | 3000 | 358 |
| 1980G | Yasya and the Mysterious Tree | | | 2300 | 1.8k |
| 1976E | Splittable Permutations | | | 2500 | 1.3k |
| 1976F | Remove Bridges | | | 2800 | 893 |
| 1975D | Paint the Tree | | | 1700 | 7.6k |
| 1975E | Chain Queries | | | 2100 | 2.9k |
| 1970A2 | Balanced Unshuffle (Medium) | | | 2400 | 621 |
| 1970A3 | Balanced Unshuffle (Hard) | | | 2400 | 688 |
| 1970C2 | Game on Tree (Medium) | | | 1700 | 4.5k |
| 1970C3 | Game on Tree (Hard) | | | 1900 | 2.5k |
| 1970G1 | Min-Fund Prison (Easy) | | | 1900 | 2k |
| 1970G2 | Min-Fund Prison (Medium) | | | 2200 | 907 |
| 1970G3 | Min-Fund Prison (Hard) | | | 2400 | 574 |
| 1967C | Fenwick Tree | | | 2300 | 2.3k |
| 1957F1 | Frequency Mismatch (Easy Version) | | | 2600 | 706 |
| 1957F2 | Frequency Mismatch (Hard Version) | | | 2700 | 659 |
| 1951H | Thanos Snap | | | 3200 | 380 |
| 1950F | 0, 1, 2, Tree! | | | 1700 | 11.5k |
| 1949C | Annual Ants' Gathering | | | 1900 | 2.6k |
| 1949F | Dating | | | 2200 | 1.5k |
| 1949J | Amanda the Amoeba | | | 2600 | 550 |
| 1948G | MST with Matching | | | 3100 | 976 |
| 1946C | Tree Cutting | | | 1600 | 14.1k |