| 629E | Famil Door and Roads | | | 2300 | 1.2k |
| 626D | Jerry's Protest | | | 1800 | 3.2k |
| 623E | Transforming Sequence | | | 3300 | 715 |
| 621B | Wet Shark and Bishops | | | 1300 | 11.7k |
| 621C | Wet Shark and Flowers | | | 1700 | 6.4k |
| 617B | Chocolate | | | 1300 | 20.3k |
| 612E | Square Root of Permutation | | | 2200 | 2.1k |
| 610A | Pasha and Stick | | | 1000 | 28.1k |
| 608B | Hamming Distance Sum | | | 1500 | 7.6k |
| 603B | Moodular Arithmetic | | | 1800 | 2.7k |
| 596C | Wilbur and Points | | | 1700 | 2.3k |
| 585E | Present for Vitalik the Philatelist | | | 2900 | 1.3k |
| 584B | Kolya and Tanya | | | 1500 | 14k |
| 577B | Modulo Sum | | | 1900 | 15.6k |
| 575H | Bots | | | 1800 | 1.9k |
| 571A | Lengthening Sticks | | | 2100 | 2.7k |
| 570E | Pig and Palindromes | | | 2300 | 2.2k |
| 568B | Symmetric and Transitive | | | 1900 | 2.4k |
| 559C | Gerald and Giant Chess | | | 2200 | 8.3k |
| 559D | Randomizer | | | 2800 | 502 |
| 557D | Vitaly and Cycle | | | 2000 | 2.4k |
| 553A | Kyoya and Colored Balls | | | 1500 | 10.1k |
| 553B | Kyoya and Permutation | | | 1900 | 2.3k |
| 552D | Vanya and Triangles | | | 1900 | 4.9k |
| 551D | GukiZ and Binary Operations | | | 2100 | 2.1k |
| 547C | Mike and Foam | | | 2300 | 3.5k |
| 535B | Tavas and SaDDas | | | 1100 | 27k |
| 520E | Pluses everywhere | | | 2200 | 2.1k |
| 518D | Ilya and Escalator | | | 1700 | 8.4k |
| 518F | Pasha and Pipe | | | 2300 | 442 |
| 506E | Mr. Kitayuta's Gift | | | 3000 | 1k |
| 501E | Misha and Palindrome Degree | | | 2500 | 982 |
| 500D | New Year Santa Network | | | 1900 | 3.3k |
| 489D | Unbearable Controversy of Being | | | 1700 | 7.1k |
| 489F | Special Matrices | | | 2100 | 2k |
| 482D | Random Function and Tree | | | 2700 | 646 |
| 479E | Riding in a Lift | | | 1900 | 5.7k |
| 478B | Random Teams | | | 1300 | 41.9k |
| 476B | Dreamoon and WiFi | | | 1300 | 38k |
| 466D | Increase Sequence | | | 2100 | 3.9k |
| 459B | Pashmak and Flowers | | | 1300 | 48.5k |
| 459C | Pashmak and Buses | | | 1900 | 6.5k |
| 457D | Bingo! | | | 2700 | 423 |
| 452C | Magic Trick | | | 2100 | 1.8k |
| 451E | Devu and Flowers | | | 2300 | 4.7k |
| 449D | Jzzhu and Numbers | | | 2400 | 6.4k |
| 439E | Devu and Birthday Celebration | | | 2100 | 1.9k |
| 438E | The Child and Binary Tree | | | 3100 | 2.3k |
| 431D | Random Task | | | 2100 | 3k |
| 414B | Mashmokh and ACM | | | 1400 | 30.4k |
| 414C | Mashmokh and Reverse Operation | | | 2100 | 2.4k |
| 407C | Curious Array | | | 2500 | 1.2k |
| 403D | Beautiful Pairs of Numbers | | | 2300 | 1.3k |
| 401D | Roman and Numbers | | | 2000 | 4.7k |
| 396A | On Number of Decompositions into Multipliers | | | unrated | 1.7k |
| 396D | On Sum of Number of Inversions in Permutations | | | unrated | 465 |
| 392C | Yet Another Number Sequence | | | unrated | 687 |
| 383E | Vowels | | | 2700 | 4.6k |
| 382E | Ksenia and Combinatorics | | | 2600 | 469 |
| 380D | Sereja and Cinema | | | 2500 | 555 |
| 374B | Inna and Nine | | | 1500 | 3.5k |
| 372E | Drawing Circles is Fun | | | 3000 | 259 |
| 367E | Sereja and Intervals | | | 2700 | 1.4k |
| 364A | Matrix | | | 1600 | 5k |
| 360C | Levko and Strings | | | 2500 | 1.3k |
| 356C | Compartments | | | 2100 | 1.4k |
| 353B | Two Heaps | | | 1900 | 2.4k |
| 351B | Jeff and Furik | | | 1900 | 2.8k |
| 340C | Tourist Problem | | | 1600 | 4.7k |
| 340E | Iahub and Permutations | | | 2000 | 2.8k |
| 336D | Vasily the Bear and Beautiful Strings | | | 2100 | 1.2k |
| 336E | Vasily the Bear and Painting Square | | | 2700 | 158 |
| 327C | Magic Five | | | 1700 | 3.7k |
| 327E | Axis Walking | | | 2300 | 1.6k |
| 325E | The Red Button | | | 2800 | 998 |
| 323A | Black-and-White Cube | | | 1600 | 976 |
| 322B | Ciel and Flowers | | | 1600 | 13.3k |
| 319A | Malek Dance Club | | | 1600 | 3k |
| 306C | White, Black and White Again | | | 2100 | 662 |
| 305D | Olya and Graph | | | 2200 | 582 |
| 300C | Beautiful Numbers | | | 1800 | 12.4k |
| 296B | Yaroslav and Two Strings | | | 2000 | 2.8k |
| 295C | Greg and Friends | | | 2100 | 2k |
| 295D | Greg and Caves | | | 2400 | 764 |
| 294C | Shaass and Lights | | | 1900 | 4.5k |
| 293B | Distinct Paths | | | 2700 | 995 |
| 288B | Polo the Penguin and Houses | | | 1500 | 3.2k |
| 288D | Polo the Penguin and Trees | | | 2400 | 859 |
| 285D | Permutation Sum | | | 1900 | 1.7k |
| 285E | Positions in Permutations | | | 2600 | 1.4k |
| 283E | Cow Tennis Tournament | | | 2800 | 948 |
| 272D | Dima and Two Sequences | | | 1600 | 2.9k |
| 272E | Dima and Horses | | | 2200 | 1.3k |
| 258B | Little Elephant and Elections | | | 1900 | 1.6k |
| 258C | Little Elephant and LCM | | | 2000 | 2k |
| 251A | Points on Line | | | 1300 | 21.9k |
| 235E | Number Challenge | | | 2600 | 963 |
| 232B | Table | | | 1900 | 1.7k |
| 229C | Triangles | | | 1900 | 1.8k |
| 229E | Gifts | | | 2600 | 617 |