| 1401D | Maximum Distributed Tree | | | 1800 | 10.7k |
| 1401E | Divide Square | | | 2400 | 2.7k |
| 1401F | Reverse and Swap | | | 2400 | 2k |
| 1400A | String Similarity | | | 800 | 28k |
| 1400B | RPG Protagonist | | | 1700 | 11.7k |
| 1400C | Binary String Reconstruction | | | 1500 | 18.6k |
| 1400D | Zigzags | | | 1900 | 11.5k |
| 1400E | Clear the Multiset | | | 2200 | 6.5k |
| 1400F | x-prime Substrings | | | 2800 | 1.2k |
| 1400G | Mercenaries | | | 2600 | 1.2k |
| 1399A | Remove Smallest | | | 800 | 82.8k |
| 1399B | Gifts Fixing | | | 800 | 47.4k |
| 1399C | Boats Competition | | | 1200 | 33.3k |
| 1399D | Binary String To Subsequences | | | 1500 | 20.1k |
| 1399E1 | Weights Division (easy version) | | | 2000 | 6.4k |
| 1399E2 | Weights Division (hard version) | | | 2200 | 2.6k |
| 1399F | Yet Another Segments Subset | | | 2300 | 1.9k |
| 1398A | Bad Triangle | | | 800 | 28.9k |
| 1398B | Substring Removal Game | | | 800 | 26.1k |
| 1398C | Good Subarrays | | | 1600 | 38.6k |
| 1398D | Colored Rectangles | | | 1800 | 12.7k |
| 1398E | Two Types of Spells | | | 2200 | 2.6k |
| 1398F | Controversial Rounds | | | 2500 | 1.5k |
| 1398G | Running Competition | | | 2600 | 1.3k |
| 1397A | Juggling Letters | | | 800 | 30k |
| 1397B | Power Sequence | | | 1500 | 15.6k |
| 1396A | Multiples of Length | | | 1600 | 16.8k |
| 1396B | Stoned Game | | | 1800 | 13.2k |
| 1396C | Monster Invaders | | | 2300 | 2.9k |
| 1396D | Rainbow Rectangles | | | 3300 | 351 |
| 1396E | Distance Matching | | | 3200 | 441 |
| 1395A | Boboniu Likes to Color Balls | | | 1000 | 25.7k |
| 1395B | Boboniu Plays Chess | | | 1100 | 16.4k |
| 1395C | Boboniu and Bit Operations | | | 1600 | 15.4k |
| 1394A | Boboniu Chats with Du | | | 1800 | 7.2k |
| 1394B | Boboniu Walks on Graph | | | 2300 | 2.2k |
| 1394C | Boboniu and String | | | 2600 | 1.3k |
| 1394D | Boboniu and Jianghu | | | 2800 | 1.3k |
| 1394E | Boboniu and Banknote Collection | | | 3500 | 183 |
| 1393A | Rainbow Dash, Fluttershy and Chess Coloring | | | 800 | 20.9k |
| 1393B | Applejack and Storages | | | 1400 | 17.4k |
| 1393C | Pinkie Pie Eats Patty-cakes | | | 1700 | 11.1k |
| 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 |
| 1392A | Omkar and Password | | | 800 | 21.8k |
| 1392B | Omkar and Infinity Clock | | | 800 | 18.9k |
| 1392C | Omkar and Waterslide | | | 1200 | 19.7k |
| 1392D | Omkar and Bed Wars | | | 1700 | 10k |
| 1392E | Omkar and Duck | | | 2100 | 3.8k |
| 1392F | Omkar and Landslide | | | 2400 | 2.6k |
| 1392G | Omkar and Pies | | | 2900 | 734 |
| 1392H | ZS Shuffles Cards | | | 3000 | 1.2k |
| 1392I | Kevin and Grid | | | 3300 | 320 |
| 1391A | Suborrays | | | 800 | 25.1k |
| 1391B | Fix You | | | 800 | 30.1k |
| 1391C | Cyclic Permutations | | | 1500 | 16.2k |
| 1391D | 505 | | | 2000 | 5.8k |
| 1391E | Pairs of Pairs | | | 2600 | 2.1k |
| 1389A | LCM Problem | | | 800 | 51.4k |
| 1389B | Array Walk | | | 1600 | 21k |
| 1389C | Good String | | | 1500 | 20.8k |
| 1389D | Segment Intersections | | | 2100 | 4.6k |
| 1389E | Calendar Ambiguity | | | 2200 | 3.8k |
| 1389F | Bicolored Segments | | | 2600 | 1.3k |
| 1389G | Directing Edges | | | 2800 | 541 |
| 1388A | Captain Flint and Crew Recruitment | | | 800 | 26k |
| 1388B | Captain Flint and a Long Voyage | | | 1000 | 22.9k |
| 1388C | Uncle Bogdan and Country Happiness | | | 1800 | 10.5k |
| 1388D | Captain Flint and Treasure | | | 2000 | 7k |
| 1388E | Uncle Bogdan and Projections | | | 2700 | 670 |
| 1387A | Graph | | | 2100 | 975 |
| 1387B1 | Village (Minimum) | | | 2100 | 2k |
| 1387B2 | Village (Maximum) | | | 2500 | 1.4k |
| 1387C | Viruses | | | 2900 | 251 |
| 1386A | Colors | | | 2700 | 357 |
| 1386B | Mixture | | | 2900 | 159 |
| 1386C | Joker | | | 2800 | 700 |
| 1385A | Three Pairwise Maximums | | | 800 | 44k |
| 1385B | Restore the Permutation by Merger | | | 800 | 39.9k |
| 1385C | Make It Good | | | 1200 | 29.2k |
| 1385D | a-Good String | | | 1500 | 22.3k |
| 1385E | Directing Edges | | | 2000 | 9.5k |
| 1385F | Removing Leaves | | | 2300 | 3k |
| 1385G | Columns Swaps | | | 2300 | 1.9k |
| 1384A | Common Prefixes | | | 1200 | 19.8k |
| 1384B1 | Koa and the Beach (Easy Version) | | | 1900 | 4.1k |
| 1384B2 | Koa and the Beach (Hard Version) | | | 2200 | 2.6k |
| 1383A | String Transformation 1 | | | 1700 | 11.4k |
| 1383B | GameGame | | | 1900 | 5.6k |
| 1383C | String Transformation 2 | | | 3100 | 718 |
| 1383D | Rearrange | | | 2800 | 836 |
| 1383E | Strange Operation | | | 2800 | 1.1k |
| 1383F | Special Edges | | | 3200 | 455 |
| 1382A | Common Subsequence | | | 800 | 27.4k |
| 1382B | Sequential Nim | | | 1100 | 26.4k |
| 1381A1 | Prefix Flip (Easy Version) | | | 1300 | 21.9k |
| 1381A2 | Prefix Flip (Hard Version) | | | 1700 | 14.5k |
| 1381B | Unmerge | | | 1800 | 9.7k |
| 1381C | Mastermind | | | 2500 | 1.7k |