| 1534C | Little Alawn's Puzzle | | | 1300 | 14k |
| 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 |
| 1463E | Plan of Lectures | | | 2400 | 1.8k |
| 1444C | Team-Building | | | 2500 | 1.9k |
| 1423H | Virus | | | 2500 | 669 |
| 1419F | Rain of Fire | | | 2800 | 632 |
| 1416D | Graph and Queries | | | 2600 | 2.9k |
| 1411C | Peaceful Rooks | | | 1700 | 8.7k |
| 1408E | Avoid Rainbow Cycles | | | 2400 | 2.2k |
| 1408G | Clusterization Counting | | | 2700 | 1.4k |
| 1385G | Columns Swaps | | | 2300 | 1.9k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |
| 1365D | Solve The Maze | | | 1700 | 21.3k |
| 1361C | Johnny and Megan's Necklace | | | 2500 | 2.1k |
| 1344B | Monopole Magnets | | | 2000 | 6.4k |
| 1335F | Robots on a Grid | | | 2200 | 2.5k |
| 1305G | Kuroni and Antihype | | | 3500 | 1.5k |
| 1290C | Prefix Enlightenment | | | 2400 | 2.1k |
| 1278D | Segment Tree | | | 2100 | 4.4k |
| 1276B | Two Fairs | | | 1900 | 5.7k |
| 1263D | Secret Passwords | | | 1500 | 16.6k |
| 1253D | Harmonious Graph | | | 1700 | 10.4k |
| 1253F | Cheap Robot | | | 2500 | 2.4k |
| 1245D | Shichikuji and Power Grid | | | 1900 | 10.1k |
| 1242B | 0-1 MST | | | 1900 | 9.6k |
| 1220E | Tourism | | | 2200 | 3.1k |
| 1217F | Forced Online Queries Problem | | | 2600 | 744 |
| 1213F | Unstable String Sort | | | 2100 | 3.1k |
| 1213G | Path Queries | | | 1800 | 9.9k |
| 1209D | Cow and Snacks | | | 1700 | 10.9k |
| 1184E3 | Daleks' Invasion (hard) | | | 2400 | 698 |
| 1176E | Cover it! | | | 1700 | 14k |
| 1167C | News Distribution | | | 1400 | 27.4k |
| 1166F | Vicky's Delivery Service | | | 2400 | 847 |
| 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 |
| 1108F | MST Unification | | | 2100 | 3.7k |
| 1095F | Make It Connected | | | 1900 | 7.8k |
| 1081D | Maximum Distance | | | 1800 | 4.8k |
| 1042F | Leaf Sets | | | 2400 | 1.6k |
| 1039C | Network Safety | | | 2200 | 1.5k |
| 1027F | Session in BSU | | | 2400 | 2k |
| 1023F | Mobile Phone Network | | | 2600 | 1.1k |
| 1012B | Chemical table | | | 1900 | 4.4k |
| 986C | AND Graph | | | 2500 | 2.8k |
| 977E | Cyclic Components | | | 1500 | 26.6k |
| 939D | Love Rescue | | | 1600 | 8.3k |
| 938G | Shortest Path Queries | | | 2900 | 1.2k |
| 920E | Connected Components? | | | 2100 | 8k |
| 915F | Imbalance Value of a Tree | | | 2400 | 3.2k |
| 901C | Bipartite Segments | | | 2300 | 1.3k |
| 891C | Envy | | | 2300 | 3.1k |
| 875F | Royal Questions | | | 2500 | 1.6k |
| 870E | Points, Lines and Ready-made Titles | | | 2300 | 1.3k |
| 859E | Desk Disorder | | | 2100 | 2.2k |
| 813F | Bipartite Checking | | | 2500 | 1.8k |
| 811E | Vladik and Entertaining Flags | | | 2600 | 1k |
| 788B | Weird journey | | | 2100 | 2.9k |
| 776D | The Door Problem | | | 2000 | 6.5k |
| 771A | Bear and Friendship Condition | | | 1500 | 18.1k |
| 766D | Mahmoud and a Dictionary | | | 2000 | 4k |
| 763A | Timofey and a tree | | | 1600 | 12.1k |
| 755C | PolandBall and Forest | | | 1300 | 15.4k |
| 750H | New Year and Snowy Grid | | | 3500 | 262 |
| 733F | Drivers Dissatisfaction | | | 2200 | 1.4k |
| 731C | Socks | | | 1600 | 8k |
| 723D | Lakes in Berland | | | 1600 | 7.6k |
| 723F | st-Spanning Tree | | | 2300 | 1.8k |
| 698B | Fix a Tree | | | 1700 | 6.2k |
| 687D | Dividing Kingdom II | | | 2500 | 1.2k |
| 659E | New Reform | | | 1600 | 8.1k |
| 659F | Polycarp and Hay | | | 2000 | 2k |
| 653E | Bear and Forgotten Tree 2 | | | 2400 | 1.8k |
| 652E | Pursuit For Artifacts | | | 2300 | 3k |
| 650C | Table Compression | | | 2200 | 2.2k |
| 627F | Island Puzzle | | | 3400 | 271 |
| 609E | Minimum spanning tree for each edge | | | 2100 | 10.7k |
| 553C | Love Triangles | | | 2200 | 2k |
| 506D | Mr. Kitayuta's Colorful Graph | | | 2400 | 2.6k |
| 505B | Mr. Kitayuta's Colorful Graph | | | 1400 | 15.2k |
| 500B | New Year Permutation | | | 1600 | 9.7k |
| 466E | Information Graph | | | 2100 | 2.7k |
| 441D | Valera and Swaps | | | 2100 | 1.3k |
| 436C | Dungeons and Candies | | | 1800 | 2.9k |
| 400D | Dima and Bacteria | | | 2000 | 3.3k |
| 362D | Fools and Foolproof Roads | | | 2100 | 1.1k |
| 358E | Dima and Kicks | | | 2300 | 446 |
| 325E | The Red Button | | | 2800 | 998 |
| 260D | Black and White Tree | | | 2100 | 1.7k |
| 228E | The Road to Berland is Paved With Good Intentions | | | 1900 | 2.9k |
| 217A | Ice Skating | | | 1200 | 25.1k |
| 209C | Trails and Glades | | | 2400 | 922 |
| 196E | Opening Portals | | | 2600 | 1.3k |
| 195E | Building Forest | | | 2000 | 910 |