| 547C | Mike and Foam | | | 2300 | 3.5k |
| 546D | Soldier and Number Game | | | 1700 | 14.1k |
| 542D | Superhero's Job | | | 2600 | 541 |
| 520E | Pluses everywhere | | | 2200 | 2.1k |
| 519C | A and B and Team Training | | | 1300 | 20.8k |
| 516E | Drazil and His Happy Friends | | | 3100 | 660 |
| 495B | Modular Equations | | | 1600 | 8.4k |
| 490C | Hacking Cypher | | | 1700 | 9.5k |
| 490D | Chocolate | | | 1900 | 2.3k |
| 487C | Prefix Product Sequence | | | 2300 | 3.2k |
| 483A | Counterexample | | | 1100 | 25.1k |
| 474F | Ant colony | | | 2100 | 12.3k |
| 472A | Design Tutorial: Learn from Math | | | 800 | 72k |
| 463E | Caisa and Tree | | | 2100 | 1.8k |
| 460B | Little Dima and Equation | | | 1500 | 13.5k |
| 456B | Fedya and Maths | | | 1200 | 18.9k |
| 449E | Jzzhu and Squares | | | 2900 | 341 |
| 446C | DZY Loves Fibonacci Numbers | | | 2400 | 4.1k |
| 402D | Upgrading Array | | | 1800 | 2.8k |
| 396A | On Number of Decompositions into Multipliers | | | unrated | 1.7k |
| 396B | On Sum of Fractions | | | unrated | 1.2k |
| 385C | Bear and Prime Numbers | | | 1700 | 10.8k |
| 375A | Divisible by Seven | | | 1600 | 5.4k |
| 371B | Fox Dividing Cheese | | | 1300 | 12.7k |
| 361B | Levko and Permutation | | | 1200 | 8.8k |
| 359C | Prime Number | | | 1900 | 3.6k |
| 353C | Find Maximum | | | 1600 | 5.3k |
| 346A | Alice and Bob | | | 1600 | 9.4k |
| 346E | Doodle Jump | | | 3000 | 345 |
| 343A | Rational Resistance | | | 1600 | 10.2k |
| 338D | GCD Table | | | 2900 | 1.5k |
| 337B | Routine Problem | | | 1400 | 10.1k |
| 337C | Quiz | | | 1600 | 5.3k |
| 336D | Vasily the Bear and Beautiful Strings | | | 2100 | 1.2k |
| 303C | Minimum Modular | | | 2400 | 988 |
| 303D | Rotatable Number | | | 2600 | 436 |
| 300E | Empire Strikes Back | | | 2300 | 1.1k |
| 293C | Cube Problem | | | 2400 | 698 |
| 284A | Cows and Primitive Roots | | | 1400 | 7.4k |
| 283D | Cows and Cool Sequences | | | 2400 | 718 |
| 271B | Prime Matrix | | | 1300 | 15.8k |
| 271E | Three Horses | | | 2200 | 685 |
| 267A | Subtractions | | | 900 | 9.7k |
| 248B | Chilly Willy | | | 1400 | 5.9k |
| 235E | Number Challenge | | | 2600 | 963 |
| 230B | T-primes | | | 1300 | 99.4k |
| 226C | Anniversary | | | 2400 | 1k |
| 225E | Unsolvable | | | 2100 | 926 |
| 223C | Partial Sums | | | 1900 | 1.8k |
| 222C | Reducing Fractions | | | 1800 | 3k |
| 216E | Martian Luck | | | 2000 | 700 |
| 200E | Tractor College | | | 2400 | 374 |
| 185D | Visit of the Great | | | 2600 | 538 |
| 180B | Divisibility Rules | | | 2300 | 488 |
| 154B | Colliders | | | 1600 | 6.3k |
| 150A | Win or Freeze | | | 1400 | 8.7k |
| 134B | Pairs of Numbers | | | 1900 | 2.5k |
| 113C | Double Happiness | | | 2200 | 1.5k |
| 93E | Lostborn | | | 2600 | 555 |
| 84A | Toy Army | | | 900 | 16.8k |
| 83D | Numbers | | | 2400 | 1.1k |
| 73E | Morrowindows | | | 2400 | 435 |
| 71C | Round Table Knights | | | 1600 | 7.4k |
| 66D | Petya and His Friends | | | 1700 | 3.8k |
| 64E | Prime Segment | | | 1800 | 295 |
| 17A | Noldbach problem | | | 1000 | 22.2k |
| 7C | Line | | | 1800 | 5.7k |