| 446C | DZY Loves Fibonacci Numbers | | | 2400 | 4.1k |
| 444C | DZY Loves Colors | | | 2400 | 3.4k |
| 442C | Artem and Array | | | 2500 | 2k |
| 442D | Adam and Tree | | | 2600 | 1.3k |
| 438D | The Child and Sequence | | | 2300 | 12.2k |
| 436E | Cardboard Box | | | 2600 | 2k |
| 436F | Banners | | | 3000 | 597 |
| 431E | Chemistry Experiment | | | 2200 | 1.2k |
| 429D | Tricky Function | | | 2200 | 3.3k |
| 427B | Prison Transfer | | | 1100 | 15.6k |
| 425C | Sereja and Two Sequences | | | 2300 | 1k |
| 425D | Sereja and Squares | | | 2300 | 1.7k |
| 424D | Biathlon Track | | | 2300 | 639 |
| 421D | Bug in Code | | | 1900 | 700 |
| 420C | Bug in Code | | | 1900 | 1.4k |
| 420D | Cup Trick | | | 2200 | 1k |
| 418D | Big Problems for Organizers | | | 2800 | 580 |
| 418E | Tricky Password | | | 3100 | 450 |
| 414D | Mashmokh and Water Tanks | | | 2300 | 777 |
| 414E | Mashmokh's Designed Problem | | | 3200 | 254 |
| 413E | Maze 2D | | | 2200 | 875 |
| 407E | k-d-sequence | | | 3100 | 1.3k |
| 403E | Two Rooted Trees | | | 2900 | 276 |
| 400E | Inna and Binary Logic | | | 2100 | 1.1k |
| 398D | Instant Messanger | | | unrated | 1.3k |
| 396C | On Changing Tree | | | unrated | 1.9k |
| 392D | Three Arrays | | | unrated | 242 |
| 391D2 | Supercollider | | | unrated | 218 |
| 390C | Inna and Candy Boxes | | | unrated | 700 |
| 387E | George and Cards | | | 2200 | 1k |
| 385C | Bear and Prime Numbers | | | 1700 | 10.8k |
| 383A | Milking cows | | | 1600 | 5.6k |
| 383C | Propagating tree | | | 2000 | 7.8k |
| 380C | Sereja and Brackets | | | 2000 | 20.9k |
| 380E | Sereja and Dividing | | | 2600 | 374 |
| 379F | New Year Tree | | | 2400 | 2.8k |
| 377B | Preparing for the Contest | | | 1900 | 2.6k |
| 377D | Developing Game | | | 2400 | 1.5k |
| 375B | Maximum Submatrix 2 | | | 1600 | 5.5k |
| 375D | Tree and Queries | | | 2400 | 9.3k |
| 374D | Inna and Sequence | | | 2000 | 1k |
| 374E | Inna and Babies | | | 2600 | 245 |
| 372C | Watching Fireworks is Fun | | | 2100 | 5.1k |
| 372D | Choosing Subtree is Fun | | | 2600 | 1.2k |
| 371D | Vessels | | | 1800 | 6.6k |
| 369E | Valera and Queries | | | 2200 | 2.9k |
| 368B | Sereja and Suffixes | | | 1100 | 51.1k |
| 367A | Sereja and Algorithm | | | 1500 | 4.6k |
| 367B | Sereja ans Anagrams | | | 1900 | 2.7k |
| 366D | Dima and Trap Graph | | | 2000 | 1.8k |
| 364A | Matrix | | | 1600 | 5k |
| 363E | Two Circles | | | 2500 | 255 |
| 362C | Insertion Sort | | | 1900 | 2k |
| 362D | Fools and Foolproof Roads | | | 2100 | 1.1k |
| 359D | Pair of Numbers | | | 2000 | 5.9k |
| 356A | Knight Tournament | | | 1500 | 17.2k |
| 351D | Jeff and Removing Periods | | | 2700 | 1.4k |
| 350D | Looking for Owls | | | 2400 | 322 |
| 349B | Color the Fence | | | 1700 | 15.2k |
| 348C | Subset Sums | | | 2500 | 2.9k |
| 343B | Alternating Current | | | 1600 | 18.6k |
| 343D | Water Tree | | | 2100 | 7.1k |
| 342E | Xenia and Tree | | | 2400 | 11.3k |
| 341D | Iahub and Xors | | | 2500 | 1.4k |
| 340D | Bubble Sort Graph | | | 1500 | 8k |
| 339D | Xenia and Bit Operations | | | 1700 | 33.8k |
| 338E | Optimize! | | | 2600 | 1.2k |
| 332B | Maximum Absurdity | | | 1500 | 8.8k |
| 332C | Students' Revenge | | | 2200 | 1.1k |
| 331A2 | Oh Sweet Beaverette | | | 1500 | 1.6k |
| 331B2 | Shave Beaver! | | | 1900 | 838 |
| 331D3 | Escaping on Beaveractor | | | 3000 | 206 |
| 323C | Two permutations | | | 2400 | 710 |
| 321E | Ciel and Gondolas | | | 2600 | 6.6k |
| 319B | Psychos in a Line | | | 1900 | 4.9k |
| 319E | Ping-Pong | | | 3000 | 809 |
| 316E1 | Summer Homework | | | 1500 | 1.6k |
| 316E2 | Summer Homework | | | 2300 | 439 |
| 316E3 | Summer Homework | | | 2300 | 591 |
| 314C | Sereja and Subsequences | | | 2000 | 2.1k |
| 314D | Sereja and Straight Lines | | | 2500 | 620 |
| 313E | Ilya and Two Numbers | | | 2300 | 633 |
| 311B | Cats Transport | | | 2400 | 4.4k |
| 311C | Fetch the Treasure | | | 2500 | 597 |
| 311D | Interval Cubing | | | 2600 | 831 |
| 306B | Optimizer | | | 2100 | 534 |
| 301D | Yaroslav and Divisors | | | 2200 | 3.1k |
| 297E | Mystic Carvings | | | 3000 | 453 |
| 295A | Greg and Array | | | 1400 | 27.3k |
| 295E | Yaroslav and Points | | | 2500 | 868 |
| 293E | Close Vertices | | | 2700 | 2.1k |
| 292D | Connected Components | | | 1900 | 2.8k |
| 292E | Copying Data | | | 1900 | 5k |
| 286D | Tourists | | | 2600 | 501 |
| 283A | Cows and Sequence | | | 1600 | 6.9k |
| 283E | Cow Tennis Tournament | | | 2800 | 948 |
| 282E | Sausage Maximization | | | 2200 | 4.7k |
| 280B | Maximum Xor Secondary | | | 1800 | 5.4k |
| 280D | k-Maximum Subsequence Sum | | | 2800 | 1.8k |
| 280E | Sequence Transformation | | | 3000 | 327 |