| 1608F | MEX counting | | | 3200 | 913 |
| 1606E | Arena | | | 2100 | 4.3k |
| 1605F | PalindORme | | | 2900 | 436 |
| 1603E | A Perfect Problem | | | 3200 | 670 |
| 1603F | October 18, 2017 | | | 2700 | 402 |
| 1599C | Bubble Strike | | | 2000 | 2k |
| 1598D | Training Session | | | 1700 | 10.7k |
| 1598E | Staircases | | | 2100 | 2.5k |
| 1594E1 | Rubik's Cube Coloring (easy version) | | | 1300 | 12.4k |
| 1586I | Omkar and Mosaic | | | 3500 | 355 |
| 1585F | Non-equal Neighbours | | | 2400 | 1.7k |
| 1584D | Guess the Permutation | | | 2000 | 4k |
| 1582B | Luntik and Subsequences | | | 900 | 35.7k |
| 1581A | CQXYM Count Permutations | | | 800 | 14.3k |
| 1580B | Mathematics Curriculum | | | 2600 | 1.4k |
| 1580F | Problems for Codeforces | | | 3300 | 226 |
| 1574B | Combinatorics Homework | | | 1100 | 18.3k |
| 1574E | Coloring | | | 2500 | 1.1k |
| 1574F | Occurrences | | | 2700 | 786 |
| 1569C | Jury Meeting | | | 1500 | 13.5k |
| 1567C | Carrying Conundrum | | | 1600 | 13.3k |
| 1559E | Mocha and Stars | | | 2200 | 2.8k |
| 1558D | Top-Notch Insertions | | | 2600 | 1.2k |
| 1557C | Moamen and XOR | | | 1700 | 10.9k |
| 1556F | Sports Betting | | | 2500 | 1.5k |
| 1553E | Permutation Shift | | | 2100 | 3.8k |
| 1553I | Stairs | | | 3400 | 369 |
| 1552B | Running for Gold | | | 1500 | 17.1k |
| 1552C | Maximize the Intersections | | | 1800 | 6.3k |
| 1551F | Equidistant Vertices | | | 2200 | 2.2k |
| 1550D | Excellent Arrays | | | 2300 | 2.1k |
| 1548C | The Three Little Pigs | | | 2500 | 2.1k |
| 1545B | AquaMoon and Chess | | | 1900 | 6.9k |
| 1545C | AquaMoon and Permutations | | | 2800 | 797 |
| 1543B | Customising the Track | | | 900 | 24.6k |
| 1542D | Priority Queue | | | 2200 | 3k |
| 1542E1 | Abnormal Permutation Pairs (easy version) | | | 2400 | 1.5k |
| 1542E2 | Abnormal Permutation Pairs (hard version) | | | 2700 | 1.1k |
| 1540B | Tree Array | | | 2300 | 3.1k |
| 1539A | Contest Start | | | 1000 | 21.7k |
| 1536E | Omkar and Forest | | | 2300 | 2.8k |
| 1536F | Omkar and Akmar | | | 2600 | 1.2k |
| 1534C | Little Alawn's Puzzle | | | 1300 | 14k |
| 1530F | Bingo | | | 2600 | 1.2k |
| 1528B | Kavi on Pairing Duty | | | 1700 | 10.9k |
| 1528E | Mashtali and Hagh Trees | | | 2900 | 640 |
| 1528F | AmShZ Farm | | | 3300 | 526 |
| 1527D | MEX Tree | | | 2400 | 2.3k |
| 1526E | Oolimry and Suffix Array | | | 2400 | 1.6k |
| 1525E | Assimilation IV | | | 2100 | 2.5k |
| 1523E | Crypto Lights | | | 2600 | 2k |
| 1517F | Reunion | | | 3200 | 702 |
| 1516E | Baby Ehab Plays with Permutations | | | 2500 | 1.1k |
| 1515E | Phoenix and Computers | | | 2200 | 4.6k |
| 1514B | AND 0, Sum Big | | | 1200 | 36.7k |
| 1513B | AND Sequences | | | 1400 | 21k |
| 1513E | Cost Equilibrium | | | 2300 | 1.8k |
| 1511E | Colorings and Dominoes | | | 2100 | 2.9k |
| 1508B | Almost Sorted | | | 1800 | 4.5k |
| 1503E | 2-Coloring | | | 3100 | 910 |
| 1499A | Domino on Windowsill | | | 800 | 22k |
| 1499E | Chaotic Merge | | | 2400 | 1.7k |
| 1499F | Diameter Cuts | | | 2400 | 1.7k |
| 1495D | BFS Trees | | | 2600 | 1.6k |
| 1488H | Build From Suffixes | | | 2800 | 74 |
| 1487G | String Counting | | | 2700 | 745 |
| 1486F | Pairs of Paths | | | 2600 | 875 |
| 1485F | Copy or Prefix Sum | | | 2400 | 2.4k |
| 1477F | Nezzar and Chocolate Bars | | | 3500 | 369 |
| 1475C | Ball in Berland | | | 1400 | 28.3k |
| 1475E | Advertising Agency | | | 1600 | 18.4k |
| 1473G | Tiles | | | 2800 | 499 |
| 1470E | Strange Permutation | | | 3200 | 981 |
| 1467D | Sum of Paths | | | 2200 | 4.1k |
| 1466G | Song of the Sirens | | | 2600 | 1.1k |
| 1466H | Finding satisfactory solutions | | | 3300 | 682 |
| 1462E1 | Close Tuples (easy version) | | | 1500 | 15.4k |
| 1462E2 | Close Tuples (hard version) | | | 1700 | 11.6k |
| 1454E | Number of Simple Paths | | | 2000 | 6.8k |
| 1452D | Radio Towers | | | 1600 | 8.8k |
| 1450H1 | Multithreading (Easy Version) | | | 2900 | 625 |
| 1450H2 | Multithreading (Hard Version) | | | 3300 | 333 |
| 1444B | Divide and Sum | | | 1900 | 6.8k |
| 1442B | Identify the Operations | | | 1800 | 5.4k |
| 1439D | INOI Final Contests | | | 3100 | 564 |
| 1437F | Emotional Fishermen | | | 2600 | 1.7k |
| 1436C | Binary Search | | | 1500 | 11.8k |
| 1436F | Sum Over Subsets | | | 2800 | 693 |
| 1433E | Two Round Dances | | | 1300 | 20k |
| 1426F | Number of Subsequences | | | 2000 | 6.4k |
| 1425D | Danger of Mad Snakes | | | 2300 | 925 |
| 1422C | Bargain | | | 1700 | 8.9k |
| 1420D | Rescue Nibel! | | | 1800 | 8.4k |
| 1418E | Expected Damage | | | 2400 | 2.3k |
| 1408G | Clusterization Counting | | | 2700 | 1.4k |
| 1403C | Chess Rush | | | 3200 | 95 |
| 1402C | Star Trek | | | 2600 | 271 |
| 1400D | Zigzags | | | 1900 | 11.5k |
| 1400G | Mercenaries | | | 2600 | 1.2k |
| 1392H | ZS Shuffles Cards | | | 3000 | 1.2k |