| 1218I | The Light Square | | | 2100 | 788 |
| 1217D | Coloring Edges | | | 2100 | 6k |
| 1214D | Treasure Island | | | 1900 | 7.2k |
| 1214H | Tiles Placement | | | 2800 | 493 |
| 1213F | Unstable String Sort | | | 2100 | 3.1k |
| 1209D | Cow and Snacks | | | 1700 | 10.9k |
| 1209F | Koala and Notebook | | | 2600 | 1.4k |
| 1208F | Bits And Pieces | | | 2600 | 3.5k |
| 1207G | Indie Album | | | 2700 | 1.3k |
| 1200F | Graph Traveler | | | 2300 | 1.2k |
| 1192B | Dynamic Diameter | | | unrated | 1.6k |
| 1188A2 | Add on a Tree: Revolution | | | 2500 | 1.3k |
| 1187E | Tree Painting | | | 2100 | 11.8k |
| 1186F | Vus the Cossack and a Graph | | | 2400 | 1.2k |
| 1184E2 | Daleks' Invasion (medium) | | | 2100 | 1.1k |
| 1182B | Plus from Picture | | | 1300 | 12.1k |
| 1182D | Complete Mirror | | | 2400 | 1k |
| 1178F1 | Short Colorful Strip | | | 2200 | 2.3k |
| 1178G | The Awesomest Vertex | | | 3000 | 655 |
| 1176D | Recover it! | | | 1800 | 5.9k |
| 1176E | Cover it! | | | 1700 | 14k |
| 1175E | Minimal Segment Cover | | | 2200 | 4.7k |
| 1172B | Nauuo and Circle | | | 1900 | 4.4k |
| 1167C | News Distribution | | | 1400 | 27.4k |
| 1158C | Permutation recovery | | | 2100 | 2.3k |
| 1156B | Ugly Pairs | | | 1800 | 6.6k |
| 1156D | 0-1-Tree | | | 2200 | 4.9k |
| 1153D | Serval and Rooted Tree | | | 1900 | 5.6k |
| 1152B | Neko Performs Cat Furrier Transform | | | 1300 | 9.4k |
| 1152E | Neko and Flashback | | | 2400 | 1.2k |
| 1147D | Palindrome XOR | | | 2400 | 881 |
| 1146D | Frog Jumping | | | 2100 | 1.2k |
| 1144F | Graph Without Long Directed Paths | | | 1700 | 14.8k |
| 1143C | Queen | | | 1400 | 18.6k |
| 1142B | Lynyrd Skynyrd | | | 2000 | 4k |
| 1141G | Privatization of Roads in Treeland | | | 1900 | 2.6k |
| 1139C | Edgy Trees | | | 1500 | 17.4k |
| 1133F2 | Spanning Tree with One Fixed Degree | | | 1900 | 3.9k |
| 1132E | Knapsack | | | 2300 | 2.1k |
| 1131D | Gourmet choice | | | 2000 | 3.7k |
| 1130C | Connect | | | 1400 | 9.5k |
| 1120D | Power Tree | | | 2500 | 1.8k |
| 1118F1 | Tree Cutting (Easy Version) | | | 1800 | 6.8k |
| 1118F2 | Tree Cutting (Hard Version) | | | 2700 | 688 |
| 1111E | Tree | | | 2500 | 1.2k |
| 1106D | Lunar New Year and a Wander | | | 1500 | 20.7k |
| 1105D | Kilani and the Game | | | 1900 | 4.5k |
| 1103C | Johnny Solving | | | 2700 | 1k |
| 1101D | GCD Counting | | | 2000 | 5.5k |
| 1100E | Andrew and Taxi | | | 2200 | 2.7k |
| 1099F | Cookies | | | 2400 | 1.1k |
| 1098A | Sum in the tree | | | 1600 | 9.7k |
| 1098C | Construct a tree | | | 2400 | 1.2k |
| 1093D | Beautiful Graph | | | 1700 | 11.8k |
| 1092E | Minimal Diameter Forest | | | 2000 | 2.2k |
| 1092F | Tree with Maximum Cost | | | 1900 | 11.5k |
| 1089H | Harder Satisfiability | | | 3400 | 129 |
| 1073F | Choosing Two Paths | | | 2500 | 668 |
| 1067B | Multihedgehog | | | 1800 | 2.9k |
| 1065D | Three Pieces | | | 2200 | 1.5k |
| 1065F | Up and Down the Tree | | | 2500 | 1.4k |
| 1062D | Fun with Integers | | | 1800 | 4.2k |
| 1062E | Company | | | 2300 | 2.1k |
| 1062F | Upgrading Cities | | | 2900 | 1.1k |
| 1060E | Sergey and Subway | | | 2000 | 3.6k |
| 1057A | Bmail Computer Network | | | 900 | 7.7k |
| 1056D | Decorate Apple Tree | | | 1600 | 6.8k |
| 1045C | Hyperspace Highways | | | 2300 | 864 |
| 1044B | Intersecting Subtrees | | | 1900 | 1.7k |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 1039C | Network Safety | | | 2200 | 1.5k |
| 1038E | Maximum Matching | | | 2400 | 1.1k |
| 1037D | Valid BFS? | | | 1700 | 19.9k |
| 1036G | Sources and Sinks | | | 2700 | 472 |
| 1033A | King Escape | | | 1000 | 16.4k |
| 1033E | Hidden Bipartite Graph | | | 2800 | 823 |
| 1027D | Mouse Hunt | | | 1700 | 8.5k |
| 1027F | Session in BSU | | | 2400 | 2k |
| 1023F | Mobile Phone Network | | | 2600 | 1.1k |
| 1020B | Badge | | | 1000 | 25.9k |
| 1016F | Road Projects | | | 2600 | 1.1k |
| 1012B | Chemical table | | | 1900 | 4.4k |
| 1010D | Mars rover | | | 2000 | 2.6k |
| 1006E | Military Problem | | | 1600 | 12k |
| 1005F | Berland and the Shortest Paths | | | 2100 | 2.2k |
| 1000E | We Need More Bosses | | | 2100 | 7k |
| 999E | Reachability from the Capital | | | 2000 | 8.1k |
| 990F | Flow Control | | | 2400 | 1.1k |
| 986C | AND Graph | | | 2500 | 2.8k |
| 982C | Cut 'em all! | | | 1500 | 16.6k |
| 982F | The Meeting Place Cannot Be Changed | | | 2700 | 229 |
| 979C | Kuro and Walking Route | | | 1600 | 7.5k |
| 977D | Divide by three, multiply by two | | | 1400 | 20.9k |
| 977E | Cyclic Components | | | 1500 | 26.6k |
| 963B | Destruction of a Tree | | | 2000 | 3k |
| 962F | Simple Cycles Edges | | | 2400 | 1.7k |
| 960E | Alternating Tree | | | 2300 | 2.4k |
| 958B2 | Maximum Control (medium) | | | 2200 | 765 |
| 954D | Fight Against Traffic | | | 1600 | 8.1k |
| 949C | Data Center Maintenance | | | 1900 | 2.3k |