| 2208D1 | Tree Orientation (Easy Version) | | | 1800 | 4.8k |
| 2208D2 | Tree Orientation (Hard Version) | | | 2200 | 2.1k |
| 2207F | Hanabi | | | 2900 | 315 |
| 2187C | Jerry and Tom | | | 2300 | 1.5k |
| 2164E | Journey | | | 2300 | 3.6k |
| 2129A | Double Perspective | | | 1300 | 18.3k |
| 2117G | Omg Graph | | | 1900 | 5.4k |
| 2108C | Neo's Escape | | | 1500 | 15.1k |
| 2086C | Disappearing Permutation | | | 1300 | 16.6k |
| 2081D | MST in Modulo Graph | | | 2600 | 1.2k |
| 2060E | Graph Composition | | | 1500 | 12.7k |
| 2033E | Sakurako, Kosuke, and the Permutation | | | 1400 | 14.5k |
| 2029D | Cool Graph | | | 1900 | 4k |
| 2021E1 | Digital Village (Easy Version) | | | 2300 | 2k |
| 2021E3 | Digital Village (Extreme Version) | | | 2800 | 725 |
| 1994D | Funny Game | | | 1900 | 7.7k |
| 1981E | Turtle and Intersected Segments | | | 2600 | 1.3k |
| 1927F | Microcycle | | | 1900 | 5.6k |
| 1895E | Infinite Card Game | | | 2300 | 1.9k |
| 1857G | Counting Graphs | | | 2000 | 5.6k |
| 1850H | The Third Letter | | | 1700 | 10.2k |
| 1810E | Monsters | | | 2100 | 4k |
| 1800E1 | Unforgivable Curse (easy version) | | | 1400 | 15.9k |
| 1800E2 | Unforgivable Curse (hard version) | | | 1500 | 15.6k |
| 1788F | XOR, Tree, and Queries | | | 2500 | 1.2k |
| 1761E | Make It Connected | | | 2400 | 2.2k |
| 1738F | Connectivity Addicts | | | 2400 | 1.4k |
| 1735C | Phase Shift | | | 1400 | 11k |
| 1726C | Jatayu's Balanced Bracket Sequence | | | 1300 | 13.5k |
| 1707C | DFS Trees | | | 2400 | 2k |
| 1691E | Number of Groups | | | 2300 | 2.2k |
| 1635E | Cars | | | 2200 | 2.9k |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1624G | MinOr Tree | | | 1900 | 7.9k |
| 1609D | Social Network | | | 1600 | 8.6k |
| 1559D1 | Mocha and Diana (Easy Version) | | | 1400 | 16.5k |
| 1559D2 | Mocha and Diana (Hard Version) | | | 2500 | 3.2k |
| 1537F | Figure Fixing | | | 2200 | 2.9k |
| 1515F | Phoenix and Earthquake | | | 2600 | 2.2k |
| 1513D | GCD and MST | | | 2000 | 6.7k |
| 1508C | Complete the MST | | | 2500 | 1.8k |
| 1468J | Road Reform | | | 1800 | 6.2k |
| 1466F | Euclid's nightmare | | | 2100 | 3.1k |
| 1408E | Avoid Rainbow Cycles | | | 2400 | 2.2k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |
| 1365D | Solve The Maze | | | 1700 | 21.3k |
| 1335F | Robots on a Grid | | | 2200 | 2.5k |
| 1253D | Harmonious Graph | | | 1700 | 10.4k |
| 1245D | Shichikuji and Power Grid | | | 1900 | 10.1k |
| 1220E | Tourism | | | 2200 | 3.1k |
| 1213F | Unstable String Sort | | | 2100 | 3.1k |
| 1133F2 | Spanning Tree with One Fixed Degree | | | 1900 | 3.9k |
| 1131D | Gourmet choice | | | 2000 | 3.7k |
| 1120D | Power Tree | | | 2500 | 1.8k |
| 1108F | MST Unification | | | 2100 | 3.7k |
| 1095F | Make It Connected | | | 1900 | 7.8k |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 939D | Love Rescue | | | 1600 | 8.3k |
| 875F | Royal Questions | | | 2500 | 1.6k |
| 731C | Socks | | | 1600 | 8k |
| 723D | Lakes in Berland | | | 1600 | 7.6k |
| 723F | st-Spanning Tree | | | 2300 | 1.8k |
| 659E | New Reform | | | 1600 | 8.1k |
| 659F | Polycarp and Hay | | | 2000 | 2k |
| 650C | Table Compression | | | 2200 | 2.2k |
| 500B | New Year Permutation | | | 1600 | 9.7k |
| 436C | Dungeons and Candies | | | 1800 | 2.9k |
| 362D | Fools and Foolproof Roads | | | 2100 | 1.1k |
| 325E | The Red Button | | | 2800 | 998 |
| 260D | Black and White Tree | | | 2100 | 1.7k |
| 209C | Trails and Glades | | | 2400 | 922 |