| 2030B | Minimise Oneness | | | 800 | 24k |
| 2030E | MEXimize the Score | | | 2200 | 2k |
| 2030G1 | The Destruction of the Universe (Easy Version) | | | 2900 | 269 |
| 2030G2 | The Destruction of the Universe (Hard Version) | | | 3100 | 206 |
| 2028E | Alice's Adventures in the Rabbit Hole | | | 2300 | 2k |
| 2025B | Binomial Coefficients, Kind Of | | | 1100 | 19.9k |
| 2025E | Card Game | | | 2200 | 2.4k |
| 2018F1 | Speedbreaker Counting (Easy Version) | | | 2900 | 344 |
| 2008F | Sakurako's Box | | | 1400 | 16k |
| 2005A | Simple Palindrome | | | 900 | 26.7k |
| 2001E1 | Deterministic Heap (Easy Version) | | | 2400 | 1.6k |
| 2000E | Photoshoot for Gorillas | | | 1400 | 16.6k |
| 1999F | Expected Median | | | 1500 | 14.5k |
| 1997F | Chips on a Line | | | 2700 | 1.3k |
| 1996D | Fun | | | 1500 | 20k |
| 1996E | Decode | | | 1600 | 12.9k |
| 1994H | Fortnite | | | 3500 | 779 |
| 1992G | Ultra-Meow | | | 2000 | 4.3k |
| 1989E | Distance to Different | | | 2300 | 2.6k |
| 1988F | Heartbeat | | | 3000 | 482 |
| 1986G1 | Permutation Problem (Simple Version) | | | 2200 | 2k |
| 1985E | Secret Box | | | 1200 | 23.9k |
| 1985G | D-Function | | | 1600 | 12.5k |
| 1984C2 | Magnitude (Hard Version) | | | 1700 | 8.8k |
| 1983E | I Love Balls | | | 2300 | 2.5k |
| 1982E | Number of k-good subarrays | | | 2300 | 1.9k |
| 1976E | Splittable Permutations | | | 2500 | 1.3k |
| 1975F | Set | | | 2600 | 1.1k |
| 1967C | Fenwick Tree | | | 2300 | 2.3k |
| 1967E1 | Again Counting Arrays (Easy Version) | | | 3100 | 449 |
| 1967E2 | Again Counting Arrays (Hard Version) | | | 3500 | 231 |
| 1957C | How Does the Rook Move? | | | 1600 | 12.2k |
| 1957E | Carousel of Combinations | | | 2400 | 1.7k |
| 1954D | Colored Balls | | | 1800 | 8.4k |
| 1954F | Unique Strings | | | 3100 | 430 |
| 1952E | Sweep Line | | | unrated | 346 |
| 1951G | Clacking Balls | | | 3100 | 507 |
| 1948F | Rare Coins | | | 2500 | 1.7k |
| 1946E | Girl Permutation | | | 2200 | 3.2k |
| 1943D1 | Counting Is Fun (Easy Version) | | | 2400 | 2k |
| 1942G | Bessie and Cards | | | 2800 | 786 |
| 1935D | Exam in MAC | | | 1800 | 11k |
| 1933G | Turtle Magic: Royal Turtle Shell Pattern | | | 2300 | 1.2k |
| 1931D | Divisible Pairs | | | 1300 | 32.7k |
| 1931G | One-Dimensional Puzzle | | | 2000 | 3.8k |
| 1930E | 2..3...4.... Wonderful! Wonderful! | | | 2400 | 1.5k |
| 1929D | Sasha and a Walk in the City | | | 1900 | 5.9k |
| 1929F | Sasha and the Wedding Binary Search Tree | | | 2300 | 2.4k |
| 1928F | Digital Patterns | | | 2900 | 479 |
| 1925D | Good Trip | | | 1900 | 4.9k |
| 1924D | Balanced Subsequences | | | 2700 | 1.5k |
| 1922B | Forming Triangles | | | 1200 | 23.7k |
| 1920E | Counting Binary Strings | | | 2100 | 3.5k |
| 1919E | Counting Prefixes | | | 2600 | 1.2k |
| 1917D | Yet Another Inversions Problem | | | 2300 | 2.1k |
| 1916H1 | Matrix Rank (Easy Version) | | | 2700 | 751 |
| 1916H2 | Matrix Rank (Hard Version) | | | 2700 | 681 |
| 1914G1 | Light Bulbs (Easy Version) | | | 2100 | 2.5k |
| 1912B | Blueprint for Seating | | | 2100 | 1.5k |
| 1909F1 | Small Permutation Problem (Easy Version) | | | 2200 | 2.3k |
| 1909F2 | Small Permutation Problem (Hard Version) | | | 2500 | 1.3k |
| 1909I | Short Permutation Problem | | | 1900 | 183 |
| 1905E | One-X | | | 2400 | 1.3k |
| 1895F | Fancy Arrays | | | 2600 | 1.1k |
| 1886D | Monocarp and the Set | | | 2100 | 4.3k |
| 1879D | Sum of XOR Functions | | | 1700 | 11.1k |
| 1868C | Travel Plan | | | 2400 | 1.4k |
| 1866B | Battling with Numbers | | | 1400 | 9.4k |
| 1866M | Mighty Rock Tower | | | 2400 | 1k |
| 1863G | Swaps | | | 2800 | 1k |
| 1862D | Ice Cream Balls | | | 1300 | 20.2k |
| 1861E | Non-Intersecting Subpermutations | | | 2300 | 2.1k |
| 1855B | Longest Divisors Interval | | | 900 | 48.2k |
| 1854C | Expected Destruction | | | 2500 | 2k |
| 1850G | The Morning Star | | | 1500 | 15.8k |
| 1848F | Vika and Wiki | | | 2400 | 2.1k |
| 1847E | Triangle Platinum? | | | 2900 | 398 |
| 1844H | Multiple of Three Cycles | | | 3400 | 305 |
| 1843C | Sum in Binary Tree | | | 800 | 40.3k |
| 1843D | Apple Tree | | | 1200 | 22.3k |
| 1842G | Tenzing and Random Operations | | | 2800 | 1.7k |
| 1840B | Binary Cafe | | | 1100 | 25k |
| 1840C | Ski Resort | | | 1000 | 51k |
| 1838E | Count Supersequences | | | 2500 | 1.9k |
| 1833F | Ira and Flamenco | | | 1700 | 10.6k |
| 1830C | Hyperregular Bracket Strings | | | 2400 | 2.3k |
| 1829H | Don't Blame Me | | | 1700 | 11.3k |
| 1827A | Counting Orders | | | 1100 | 30.6k |
| 1824B1 | LuoTianyi and the Floating Islands (Easy Version) | | | 1800 | 6.3k |
| 1824B2 | LuoTianyi and the Floating Islands (Hard Version) | | | 2300 | 3.6k |
| 1823A | A-characteristic | | | 800 | 17.3k |
| 1821A | Matching | | | 800 | 21.4k |
| 1821F | Timber | | | 2600 | 1k |
| 1817C | Similar Polynomials | | | 2400 | 1.3k |
| 1815D | XOR Counting | | | 2600 | 1.5k |
| 1811G1 | Vlad and the Nice Paths (easy version) | | | 2100 | 2.6k |
| 1811G2 | Vlad and the Nice Paths (hard version) | | | 2200 | 2.2k |
| 1810H | Last Number | | | 2900 | 176 |
| 1809G | Prediction | | | 2800 | 644 |
| 1808E3 | Minibuses on Venus (hard version) | | | 2800 | 622 |