| 1272E | Nearest Opposite Parity | | | 1900 | 8.2k |
| 1270G | Subset with Zero Sum | | | 2700 | 3.1k |
| 1266F | Almost Same Distance | | | 2900 | 415 |
| 1263D | Secret Passwords | | | 1500 | 16.6k |
| 1263F | Economic Difficulties | | | 2400 | 982 |
| 1253D | Harmonious Graph | | | 1700 | 10.4k |
| 1250N | Wires | | | 2000 | 1.8k |
| 1242B | 0-1 MST | | | 1900 | 9.6k |
| 1242C | Sum Balance | | | 2400 | 2k |
| 1239D | Catowice City | | | 2400 | 2.7k |
| 1238F | The Maximum Subtree | | | 2200 | 2.2k |
| 1236F | Alice and the Cactus | | | 3000 | 327 |
| 1220E | Tourism | | | 2200 | 3.1k |
| 1217D | Coloring Edges | | | 2100 | 6k |
| 1213F | Unstable String Sort | | | 2100 | 3.1k |
| 1209D | Cow and Snacks | | | 1700 | 10.9k |
| 1209F | Koala and Notebook | | | 2600 | 1.4k |
| 1200F | Graph Traveler | | | 2300 | 1.2k |
| 1186F | Vus the Cossack and a Graph | | | 2400 | 1.2k |
| 1184E2 | Daleks' Invasion (medium) | | | 2100 | 1.1k |
| 1176D | Recover it! | | | 1800 | 5.9k |
| 1176E | Cover it! | | | 1700 | 14k |
| 1167C | News Distribution | | | 1400 | 27.4k |
| 1158C | Permutation recovery | | | 2100 | 2.3k |
| 1152E | Neko and Flashback | | | 2400 | 1.2k |
| 1147D | Palindrome XOR | | | 2400 | 881 |
| 1144F | Graph Without Long Directed Paths | | | 1700 | 14.8k |
| 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 |
| 1131D | Gourmet choice | | | 2000 | 3.7k |
| 1120D | Power Tree | | | 2500 | 1.8k |
| 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 |
| 1100E | Andrew and Taxi | | | 2200 | 2.7k |
| 1098C | Construct a tree | | | 2400 | 1.2k |
| 1093D | Beautiful Graph | | | 1700 | 11.8k |
| 1089H | Harder Satisfiability | | | 3400 | 129 |
| 1067B | Multihedgehog | | | 1800 | 2.9k |
| 1062D | Fun with Integers | | | 1800 | 4.2k |
| 1062F | Upgrading Cities | | | 2900 | 1.1k |
| 1056D | Decorate Apple Tree | | | 1600 | 6.8k |
| 1045C | Hyperspace Highways | | | 2300 | 864 |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 1039C | Network Safety | | | 2200 | 1.5k |
| 1038E | Maximum Matching | | | 2400 | 1.1k |
| 1037D | Valid BFS? | | | 1700 | 19.9k |
| 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 |
| 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 |
| 986C | AND Graph | | | 2500 | 2.8k |
| 982C | Cut 'em all! | | | 1500 | 16.6k |
| 982F | The Meeting Place Cannot Be Changed | | | 2700 | 229 |
| 977E | Cyclic Components | | | 1500 | 26.6k |
| 962F | Simple Cycles Edges | | | 2400 | 1.7k |
| 958B2 | Maximum Control (medium) | | | 2200 | 765 |
| 954D | Fight Against Traffic | | | 1600 | 8.1k |
| 949C | Data Center Maintenance | | | 1900 | 2.3k |
| 948A | Protect Sheep | | | 900 | 15.6k |
| 939D | Love Rescue | | | 1600 | 8.3k |
| 936B | Sleepy Game | | | 2100 | 3.5k |
| 930A | Peculiar apple-tree | | | 1500 | 8.6k |
| 920E | Connected Components? | | | 2100 | 8k |
| 919D | Substring | | | 1700 | 12.7k |
| 917B | MADMAX | | | 1700 | 4k |
| 915D | Almost Acyclic Graph | | | 2200 | 4.1k |
| 911F | Tree Destruction | | | 2400 | 2.4k |
| 909E | Coprocessor | | | 1900 | 2.5k |
| 901C | Bipartite Segments | | | 2300 | 1.3k |
| 901D | Weighting a Tree | | | 2700 | 673 |
| 893C | Rumor | | | 1300 | 29.1k |
| 883G | Orientation of Edges | | | 1900 | 1.6k |
| 877D | Olya and Energy Drinks | | | 2100 | 5.3k |
| 875C | National Property | | | 2100 | 2.4k |
| 870E | Points, Lines and Ready-made Titles | | | 2300 | 1.3k |
| 869D | The Overdosing Ubiquity | | | 2800 | 309 |
| 864F | Cities Excursions | | | 2700 | 706 |
| 862B | Mahmoud and Ehab and the bipartiteness | | | 1300 | 27.1k |
| 859E | Desk Disorder | | | 2100 | 2.2k |
| 858F | Wizard's Tour | | | 2300 | 2.2k |
| 855G | Harry Vs Voldemort | | | 3300 | 415 |
| 852I | Dating | | | 2300 | 786 |
| 847L | Berland SU Computer Network | | | 2400 | 363 |
| 845G | Shortest Path Problem? | | | 2300 | 2.2k |
| 843C | Upgrading Tree | | | 2600 | 416 |
| 842C | Ilya And The Tree | | | 2000 | 3.8k |
| 842E | Nikita and game | | | 2800 | 513 |
| 840B | Leha and another game about graph | | | 2100 | 2.9k |
| 839C | Journey | | | 1500 | 20.8k |