| 1455G | Forbidden Value | | | 2900 | 513 |
| 1453E | Dog Snacks | | | 2300 | 2.3k |
| 1453F | Even Harder | | | 2700 | 1.1k |
| 1452D | Radio Towers | | | 1600 | 8.8k |
| 1452E | Two Editorials | | | 2500 | 1.8k |
| 1451B | Non-Substring Subsequence | | | 900 | 20.3k |
| 1451C | String Equality | | | 1400 | 17.4k |
| 1450G | Communism | | | 3500 | 415 |
| 1446B | Catching Cheaters | | | 1800 | 9.3k |
| 1446C | Xor Tree | | | 2100 | 4.2k |
| 1444D | Rectangular Polyline | | | 2900 | 671 |
| 1444E | Finding the Vertex | | | 3500 | 171 |
| 1443B | Saving the City | | | 1300 | 16.7k |
| 1442A | Extreme Subtraction | | | 1800 | 9.8k |
| 1442D | Sum | | | 2800 | 3k |
| 1442E | Black, White and Grey Tree | | | 3000 | 805 |
| 1439D | INOI Final Contests | | | 3100 | 564 |
| 1437C | Chef Monocarp | | | 1800 | 12.5k |
| 1437E | Make It Increasing | | | 2200 | 4k |
| 1437F | Emotional Fishermen | | | 2600 | 1.7k |
| 1433F | Zero Remainder Sum | | | 2100 | 6.9k |
| 1431G | Number Deletion Game | | | 2100 | 212 |
| 1431J | Zero-XOR Array | | | 3400 | 55 |
| 1430F | Realistic Gameplay | | | 2600 | 1.1k |
| 1430G | Yet Another DAG Problem | | | 2600 | 949 |
| 1428F | Fruit Sequences | | | 2400 | 2.6k |
| 1428G1 | Lucky Numbers (Easy Version) | | | 2900 | 698 |
| 1428G2 | Lucky Numbers (Hard Version) | | | 3000 | 843 |
| 1427C | The Hard Work of Paparazzi | | | 2000 | 6.2k |
| 1426F | Number of Subsequences | | | 2000 | 6.4k |
| 1425B | Blue and Red of Our Faculty! | | | 2600 | 380 |
| 1425D | Danger of Mad Snakes | | | 2300 | 925 |
| 1423J | Bubble Cup hypothesis | | | 2400 | 915 |
| 1422C | Bargain | | | 1700 | 8.9k |
| 1422E | Minlexes | | | 2700 | 912 |
| 1421E | Swedish Heroes | | | 2700 | 1k |
| 1420C1 | Pokémon Army (easy version) | | | 1300 | 19.2k |
| 1420C2 | Pokémon Army (hard version) | | | 2100 | 5.3k |
| 1420E | Battle Lemmings | | | 2500 | 1.1k |
| 1418C | Mortal Kombat Tower | | | 1500 | 29.7k |
| 1416C | XOR Inverse | | | 2000 | 5.2k |
| 1416E | Split | | | 3200 | 546 |
| 1415C | Bouncing Ball | | | 1400 | 11.8k |
| 1415F | Cakes for Clones | | | 2900 | 609 |
| 1413C | Perform Easily | | | 1900 | 6.3k |
| 1409E | Two Platforms | | | 1800 | 8.5k |
| 1409F | Subsequences of Length Two | | | 2100 | 5.2k |
| 1408C | Discrete Acceleration | | | 1500 | 9.3k |
| 1408D | Searchlights | | | 2000 | 4.7k |
| 1408G | Clusterization Counting | | | 2700 | 1.4k |
| 1408I | Bitwise Magic | | | 3200 | 347 |
| 1407D | Discrete Centrifugal Jumps | | | 2200 | 6k |
| 1407E | Egor in the Republic of Dagestan | | | 2500 | 2k |
| 1406B | Maximum Product | | | 1200 | 24.7k |
| 1404B | Tree Tag | | | 1900 | 8.3k |
| 1403C | Chess Rush | | | 3200 | 95 |
| 1402C | Star Trek | | | 2600 | 271 |
| 1401D | Maximum Distributed Tree | | | 1800 | 10.7k |
| 1400E | Clear the Multiset | | | 2200 | 6.5k |
| 1400F | x-prime Substrings | | | 2800 | 1.2k |
| 1400G | Mercenaries | | | 2600 | 1.2k |
| 1399F | Yet Another Segments Subset | | | 2300 | 1.9k |
| 1398C | Good Subarrays | | | 1600 | 38.6k |
| 1398D | Colored Rectangles | | | 1800 | 12.7k |
| 1398F | Controversial Rounds | | | 2500 | 1.5k |
| 1396C | Monster Invaders | | | 2300 | 2.9k |
| 1395C | Boboniu and Bit Operations | | | 1600 | 15.4k |
| 1394A | Boboniu Chats with Du | | | 1800 | 7.2k |
| 1394D | Boboniu and Jianghu | | | 2800 | 1.3k |
| 1393D | Rarity and New Dress | | | 2100 | 4.2k |
| 1393E1 | Twilight and Ancient Scroll (easier version) | | | 2800 | 483 |
| 1393E2 | Twilight and Ancient Scroll (harder version) | | | 3200 | 522 |
| 1392D | Omkar and Bed Wars | | | 1700 | 10k |
| 1392G | Omkar and Pies | | | 2900 | 734 |
| 1392H | ZS Shuffles Cards | | | 3000 | 1.2k |
| 1391C | Cyclic Permutations | | | 1500 | 16.1k |
| 1391D | 505 | | | 2000 | 5.8k |
| 1389B | Array Walk | | | 1600 | 21k |
| 1389C | Good String | | | 1500 | 20.8k |
| 1389F | Bicolored Segments | | | 2600 | 1.3k |
| 1389G | Directing Edges | | | 2800 | 540 |
| 1387A | Graph | | | 2100 | 974 |
| 1387B1 | Village (Minimum) | | | 2100 | 2k |
| 1387C | Viruses | | | 2900 | 251 |
| 1385D | a-Good String | | | 1500 | 22.3k |
| 1384B1 | Koa and the Beach (Easy Version) | | | 1900 | 4.1k |
| 1384B2 | Koa and the Beach (Hard Version) | | | 2200 | 2.6k |
| 1383B | GameGame | | | 1900 | 5.6k |
| 1383C | String Transformation 2 | | | 3100 | 718 |
| 1383E | Strange Operation | | | 2800 | 1.1k |
| 1382B | Sequential Nim | | | 1100 | 26.4k |
| 1381B | Unmerge | | | 1800 | 9.7k |
| 1381D | The Majestic Brown Tree Snake | | | 3000 | 832 |
| 1380C | Create The Teams | | | 1400 | 23k |
| 1380F | Strange Addition | | | 2600 | 943 |
| 1379C | Choosing flowers | | | 2000 | 6.2k |
| 1379E | Inverse Genealogy | | | 2800 | 538 |
| 1373D | Maximum Sum on Even Positions | | | 1600 | 18.1k |
| 1373E | Sum of Digits | | | 2200 | 3k |
| 1372D | Omkar and Circle | | | 2100 | 5.9k |