| 2244C | Stepan and Permutation | | | unrated | 15.7k |
| 2241B | Good times Good times | | | 1100 | 19.8k |
| 2234E | Vlad, Misha and Two Arrays | | | 2100 | 2k |
| 2231E | Graph Cutting | | | 2300 | 1.1k |
| 2223C | Zhily and Signpost | | | 2300 | 924 |
| 2219C | Coloring a Red Black Tree | | | 2300 | 1.4k |
| 2184C | Huge Pile | | | 1100 | 23k |
| 2174E2 | Game of Scientists (Version 2) | | | 3200 | 104 |
| 2167F | Tree, TREE!!! | | | 1600 | 7.6k |
| 2164F1 | Chain Prefix Rank (Easy Version) | | | 2600 | 1.3k |
| 2164F2 | Chain Prefix Rank (Hard Version) | | | 2900 | 662 |
| 2157G | Isaac's Queries | | | 2800 | 678 |
| 2157H | Keygen 3 | | | 3200 | 245 |
| 2145F | Long Journey | | | 2500 | 1.1k |
| 2135C | By the Assignment | | | 2000 | 5.4k |
| 2131G | Wafu! | | | 2000 | 3.9k |
| 2118D2 | Red Light, Green Light (Hard version) | | | 2200 | 2.6k |
| 2114F | Small Operations | | | 2000 | 5.6k |
| 2113F | Two Arrays | | | 2500 | 992 |
| 2112E | Tree Colorings | | | 2200 | 3.5k |
| 2106F | Goblin | | | 1900 | 4.5k |
| 2104F | Numbers and Strings | | | 2600 | 742 |
| 2097B | Baggage Claim | | | 2300 | 2k |
| 2086E | Zebra-like Numbers | | | 2400 | 1.7k |
| 2067C | Devyatkino | | | 1500 | 13k |
| 2063F1 | Counting Is Not Fun (Easy Version) | | | 2400 | 1.6k |
| 2057G | Secret Message | | | 3000 | 764 |
| 2056E | Nested Segments | | | 2500 | 1.1k |
| 2040E | Control of Randomness | | | 2100 | 2.8k |
| 2033E | Sakurako, Kosuke, and the Permutation | | | 1400 | 14.6k |
| 2031E | Penchick and Chloe's Trees | | | 2100 | 2.8k |
| 2028E | Alice's Adventures in the Rabbit Hole | | | 2300 | 2k |
| 2021E1 | Digital Village (Easy Version) | | | 2300 | 2k |
| 2021E3 | Digital Village (Extreme Version) | | | 2800 | 725 |
| 2006B | Iris and the Tree | | | 1800 | 4.4k |
| 2003D2 | Turtle and a MEX Problem (Hard Version) | | | 2100 | 4.7k |
| 2002F1 | Court Blue (Easy Version) | | | 2600 | 1k |
| 1976E | Splittable Permutations | | | 2500 | 1.3k |
| 1975F | Set | | | 2600 | 1.1k |
| 1971F | Circle Perimeter | | | 1600 | 12.7k |
| 1968D | Permutation Game | | | 1300 | 17.7k |
| 1955G | GCD on a grid | | | 1900 | 6.1k |
| 1952G | Mathematician Takeover | | | unrated | 1.2k |
| 1933G | Turtle Magic: Royal Turtle Shell Pattern | | | 2300 | 1.2k |
| 1929E | Sasha and the Happy Tree Cutting | | | 2300 | 2.1k |
| 1929F | Sasha and the Wedding Binary Search Tree | | | 2300 | 2.4k |
| 1914G1 | Light Bulbs (Easy Version) | | | 2100 | 2.5k |
| 1905E | One-X | | | 2400 | 1.3k |
| 1902F | Trees and XOR Queries Again | | | 2400 | 1.5k |
| 1872F | Selling a Menagerie | | | 1800 | 7.7k |
| 1863E | Speedrun | | | 2100 | 3.3k |
| 1856E2 | PermuTree (hard version) | | | 2700 | 1.8k |
| 1847F | The Boss's Identity | | | 2500 | 1.1k |
| 1844G | Tree Weights | | | 3000 | 1.2k |
| 1843D | Apple Tree | | | 1200 | 22.3k |
| 1843F1 | Omsk Metro (simple version) | | | 1800 | 6.5k |
| 1843F2 | Omsk Metro (hard version) | | | 2300 | 2.2k |
| 1835D | Doctor's Brown Hypothesis | | | 2900 | 707 |
| 1829F | Forever Winter | | | 1300 | 22.4k |
| 1824B2 | LuoTianyi and the Floating Islands (Hard Version) | | | 2300 | 3.6k |
| 1799E | City Union | | | 2300 | 1.4k |
| 1790F | Timofey and Black-White Tree | | | 2100 | 4.2k |
| 1778E | The Tree Has Fallen! | | | 2500 | 1.2k |
| 1778F | Maximizing Root | | | 2600 | 964 |
| 1777D | Score of a Tree | | | 1900 | 4.9k |
| 1775D | Friendly Spiders | | | 1800 | 8.9k |
| 1770E | Koxia and Tree | | | 2400 | 1.6k |
| 1707D | Partial Virtual Trees | | | 3000 | 1k |
| 1691F | K-Set Tree | | | 2500 | 1.2k |
| 1684H | Hard Cut | | | 3400 | 305 |
| 1682E | Unordered Swaps | | | 2700 | 777 |
| 1670C | Where is the Pizza? | | | 1400 | 11.1k |
| 1656E | Equal Tree Sums | | | 2200 | 3.9k |
| 1654D | Potion Brewing Class | | | 2100 | 3.1k |
| 1651E | Sum of Matchings | | | 2600 | 670 |
| 1633E | Spanning Tree Queries | | | 2400 | 1.8k |
| 1621C | Hidden Permutations | | | 1700 | 7.6k |
| 1618F | Reverse | | | 2000 | 4.8k |
| 1617E | Christmas Chocolates | | | 2700 | 1.1k |
| 1615E | Purple Crayon | | | 2400 | 1.8k |
| 1601F | Two Sorts | | | 3400 | 309 |
| 1598E | Staircases | | | 2100 | 2.5k |
| 1593B | Make it Divisible by 25 | | | 900 | 43.1k |
| 1593F | Red-Black Number | | | 2100 | 2.7k |
| 1592D | Hemose in ICPC ? | | | 2300 | 2.7k |
| 1554E | You | | | 2600 | 1.4k |
| 1553E | Permutation Shift | | | 2100 | 3.8k |
| 1552D | Array Differentiation | | | 1800 | 8k |
| 1552I | Organizing a Music Festival | | | 3400 | 154 |
| 1543C | Need for Pink Slips | | | 1900 | 5.7k |
| 1537F | Figure Fixing | | | 2200 | 2.9k |
| 1527D | MEX Tree | | | 2400 | 2.3k |
| 1515G | Phoenix and Odometers | | | 2700 | 1.4k |
| 1498F | Christmas Game | | | 2500 | 1.1k |
| 1495D | BFS Trees | | | 2600 | 1.6k |
| 1487C | Minimum Ties | | | 1500 | 15.6k |
| 1466F | Euclid's nightmare | | | 2100 | 3.1k |
| 1430G | Yet Another DAG Problem | | | 2600 | 949 |
| 1404D | Game of Pairs | | | 2800 | 1.3k |
| 1401D | Maximum Distributed Tree | | | 1800 | 10.7k |