| 1691F | K-Set Tree | | | 2500 | 1.2k |
| 1689C | Infected Tree | | | 1600 | 13.9k |
| 1689D | Lena and Matrix | | | 1900 | 4.8k |
| 1686B | Odd Subarrays | | | 800 | 19.5k |
| 1681D | Required Length | | | 1700 | 10.9k |
| 1681E | Labyrinth Adventures | | | 2600 | 989 |
| 1681F | Unique Occurrences | | | 2300 | 2.4k |
| 1680E | Moving Chips | | | 2000 | 4.4k |
| 1679D | Toss a Coin to Your Graph... | | | 1900 | 6k |
| 1679E | Typical Party in Dorm | | | 2400 | 1.5k |
| 1679F | Formalism for Formalism | | | 2600 | 813 |
| 1678B2 | Tokitsukaze and Good 01-String (hard version) | | | 1800 | 7.4k |
| 1677A | Tokitsukaze and Strange Inequality | | | 1600 | 9.4k |
| 1677D | Tokitsukaze and Permutations | | | 2500 | 1.5k |
| 1677F | Tokitsukaze and Gems | | | 3500 | 173 |
| 1676G | White-Black Balanced Subtrees | | | 1300 | 25.6k |
| 1675F | Vlad and Unfinished Business | | | 1800 | 6.4k |
| 1675G | Sorting Pancakes | | | 2300 | 2.2k |
| 1674G | Remove Directed Edges | | | 2000 | 3k |
| 1673C | Palindrome Basis | | | 1500 | 19k |
| 1671E | Preorder | | | 2100 | 3.3k |
| 1671F | Permutation Counting | | | 2700 | 514 |
| 1670F | Jee, You See? | | | 2400 | 1.3k |
| 1667B | Optimal Partition | | | 2100 | 4.4k |
| 1667D | Edge Elimination | | | 2900 | 847 |
| 1667E | Centroid Probabilities | | | 3000 | 938 |
| 1666F | Fancy Stack | | | 2200 | 1.6k |
| 1666J | Job Lookup | | | 2100 | 1.6k |
| 1663D | Is it rated - 3 | | | unrated | 1.5k |
| 1662C | European Trip | | | unrated | 387 |
| 1662G | Gastronomic Event | | | unrated | 574 |
| 1662L | Il Derby della Madonnina | | | unrated | 1.4k |
| 1661B | Getting Zero | | | 1300 | 21.1k |
| 1661E | Narrow Components | | | 2500 | 1.2k |
| 1660C | Get an Even String | | | 1300 | 22.3k |
| 1659C | Line Empire | | | 1500 | 15.9k |
| 1658E | Gojou and Matrix Game | | | 2500 | 1.3k |
| 1657E | Star MST | | | 2200 | 2.5k |
| 1654H | Three Minimums | | | 3500 | 109 |
| 1650F | Vitaly and Advanced Useless Algorithms | | | 2200 | 1.7k |
| 1650G | Counting Shortcuts | | | 2100 | 3.1k |
| 1648D | Serious Business | | | 2800 | 1.1k |
| 1647D | Madoka and the Best School in Russia | | | 1900 | 5.7k |
| 1647F | Madoka and Laziness | | | 3100 | 552 |
| 1646C | Factorials and Powers of Two | | | 1500 | 20.5k |
| 1646D | Weight the Tree | | | 2000 | 4.5k |
| 1646E | Power Board | | | 2200 | 2.8k |
| 1644C | Increase Subarray Sums | | | 1400 | 15.1k |
| 1637B | MEX and Array | | | 1100 | 15.5k |
| 1637D | Yet Another Minimization Problem | | | 1800 | 9.1k |
| 1637F | Towers | | | 2500 | 2.2k |
| 1635D | Infinite Set | | | 1800 | 7.1k |
| 1633D | Make Them Equal | | | 1600 | 19.5k |
| 1632C | Strange Test | | | 1600 | 14.2k |
| 1631B | Fun with Even Subarrays | | | 1100 | 28.1k |
| 1630C | Paint the Middle | | | 2200 | 3.4k |
| 1630D | Flipping Range | | | 2400 | 2.1k |
| 1628D1 | Game on Sum (Easy Version) | | | 2100 | 3.8k |
| 1628D2 | Game on Sum (Hard Version) | | | 2400 | 2.7k |
| 1627D | Not Adding | | | 1900 | 9.5k |
| 1627E | Not Escaping | | | 2200 | 2.9k |
| 1626C | Monsters And Spells | | | 1700 | 12k |
| 1626F | A Random Code Problem | | | 2800 | 922 |
| 1625C | Road Optimization | | | 1700 | 13.7k |
| 1625E1 | Cats on the Upgrade (easy version) | | | 2500 | 1.2k |
| 1624E | Masha-forgetful | | | 2000 | 4.7k |
| 1621E | New School | | | 2300 | 2k |
| 1621G | Weighted Increasing Subsequences | | | 3200 | 901 |
| 1620C | BA-String | | | 1800 | 7.3k |
| 1620F | Bipartite Array | | | 2800 | 804 |
| 1620G | Subsequences Galore | | | 2400 | 1.2k |
| 1619E | MEX and Increments | | | 1700 | 10.3k |
| 1618D | Array and Operations | | | 1300 | 21.1k |
| 1617E | Christmas Chocolates | | | 2700 | 1.1k |
| 1616D | Keep the Average High | | | 2000 | 5.7k |
| 1616G | Just Add an Edge | | | 3500 | 472 |
| 1616H | Keep XOR Low | | | 3000 | 1.4k |
| 1615F | LEGOndary Grandmaster | | | 2800 | 1.2k |
| 1614C | Divan and bitwise operations | | | 1500 | 11.4k |
| 1614D1 | Divan and Kostomuksha (easy version) | | | 2100 | 4.6k |
| 1614D2 | Divan and Kostomuksha (hard version) | | | 2300 | 2.8k |
| 1613D | MEX Sequences | | | 1900 | 5.4k |
| 1612E | Messages | | | 2000 | 2.9k |
| 1612F | Armor and Weapons | | | 2800 | 722 |
| 1611E2 | Escape The Maze (hard version) | | | 1900 | 4.4k |
| 1610D | Not Quite Lee | | | 2000 | 3.1k |
| 1609C | Complex Market Analysis | | | 1400 | 10.5k |
| 1609E | William The Oblivious | | | 2400 | 2.5k |
| 1608C | Game Master | | | 1700 | 7.4k |
| 1608F | MEX counting | | | 3200 | 913 |
| 1606E | Arena | | | 2100 | 4.3k |
| 1606F | Tree Queries | | | 2800 | 781 |
| 1605F | PalindORme | | | 2900 | 436 |
| 1603C | Extreme Extension | | | 2300 | 2.3k |
| 1603D | Artistic Partition | | | 3000 | 959 |
| 1603E | A Perfect Problem | | | 3200 | 670 |
| 1603F | October 18, 2017 | | | 2700 | 403 |
| 1601B | Frog Traveler | | | 1900 | 5.6k |
| 1601C | Optimal Insertion | | | 2300 | 2.4k |
| 1601D | Difficult Mountain | | | 2700 | 2k |