| 301412 | CF265B. Roadside Trees (Simplified Edition) | 0 | 0 | 0.000% |
| 301413 | CF265C. Escape from Stones | 0 | 0 | 0.000% |
| 301414 | CF265D. Good Sequences | 0 | 0 | 0.000% |
| 301415 | CF265E. Choosing Balls | 0 | 0 | 0.000% |
| 301416 | CF266A. Stones on the Table | 0 | 0 | 0.000% |
| 301417 | CF266B. Queue at the School | 0 | 0 | 0.000% |
| 301418 | CF266C. Below the Diagonal | 0 | 0 | 0.000% |
| 301419 | CF266D. BerDonalds | 0 | 0 | 0.000% |
| 301420 | CF266E. More Queries to Array... | 0 | 0 | 0.000% |
| 301421 | CF267A. Subtractions | 0 | 0 | 0.000% |
| 301422 | CF267B. Dominoes | 0 | 0 | 0.000% |
| 301423 | CF267C. Berland Traffic | 0 | 0 | 0.000% |
| 301424 | CF268A. Games | 0 | 0 | 0.000% |
| 301425 | CF268B. Buttons | 0 | 0 | 0.000% |
| 301426 | CF268C. Beautiful Sets of Points | 0 | 0 | 0.000% |
| 301427 | CF268D. Wall Bars | 0 | 0 | 0.000% |
| 301428 | CF268E. Playlist | 0 | 0 | 0.000% |
| 301429 | CF269A. Magical Boxes | 0 | 0 | 0.000% |
| 301430 | CF269B. Greenhouse Effect | 0 | 0 | 0.000% |
| 301431 | CF269C. Flawed Flow | 0 | 0 | 0.000% |
| 301432 | CF269D. Maximum Waterfall | 0 | 0 | 0.000% |
| 301433 | CF269E. String Theory | 0 | 0 | 0.000% |
| 301434 | CF270A. Fancy Fence | 0 | 0 | 0.000% |
| 301435 | CF270B. Multithreading | 0 | 0 | 0.000% |
| 301436 | CF270C. Magical Boxes | 0 | 0 | 0.000% |
| 301437 | CF270D. Greenhouse Effect | 0 | 0 | 0.000% |
| 301438 | CF270E. Flawed Flow | 0 | 0 | 0.000% |
| 301439 | CF271A. Beautiful Year | 0 | 2 | 0.000% |
| 301440 | CF271B. Prime Matrix | 0 | 0 | 0.000% |
| 301441 | CF271C. Secret | 0 | 0 | 0.000% |
| 301442 | CF271D. Good Substrings | 0 | 0 | 0.000% |
| 301443 | CF271E. Three Horses | 0 | 0 | 0.000% |
| 301444 | CF272A. Dima and Friends | 0 | 0 | 0.000% |
| 301445 | CF272B. Dima and Sequence | 0 | 0 | 0.000% |
| 301446 | CF272C. Dima and Staircase | 0 | 0 | 0.000% |
| 301447 | CF272D. Dima and Two Sequences | 0 | 0 | 0.000% |
| 301448 | CF272E. Dima and Horses | 0 | 0 | 0.000% |
| 301449 | CF273A. Dima and Staircase | 0 | 0 | 0.000% |
| 301450 | CF273B. Dima and Two Sequences | 0 | 0 | 0.000% |
| 301451 | CF273C. Dima and Horses | 0 | 0 | 0.000% |
| 301452 | CF273D. Dima and Figure | 0 | 0 | 0.000% |
| 301453 | CF273E. Dima and Game | 0 | 0 | 0.000% |
| 301454 | CF274A. k-Multiple Free Set | 0 | 0 | 0.000% |
| 301455 | CF274B. Zero Tree | 0 | 0 | 0.000% |
| 301456 | CF274C. The Last Hole! | 0 | 0 | 0.000% |
| 301457 | CF274D. Lovely Matrix | 0 | 0 | 0.000% |
| 301458 | CF274E. Mirror Room | 0 | 0 | 0.000% |
| 301459 | CF275A. Lights Out | 0 | 0 | 0.000% |
| 301460 | CF275B. Convex Shape | 0 | 0 | 0.000% |
| 301461 | CF275C. k-Multiple Free Set | 0 | 0 | 0.000% |
| 301462 | CF275D. Zero Tree | 0 | 0 | 0.000% |
| 301463 | CF275E. The Last Hole! | 0 | 0 | 0.000% |
| 301464 | CF276A. Lunch Rush | 0 | 0 | 0.000% |
| 301465 | CF276B. Little Girl and Game | 0 | 0 | 0.000% |
| 301466 | CF276C. Little Girl and Maximum Sum | 0 | 0 | 0.000% |
| 301467 | CF276D. Little Girl and Maximum XOR | 0 | 0 | 0.000% |
| 301468 | CF276E. Little Girl and Problem on Trees | 0 | 0 | 0.000% |
| 301469 | CF277A. Learning Languages | 0 | 0 | 0.000% |
| 301470 | CF277B. Set of Points | 0 | 0 | 0.000% |
| 301471 | CF277C. Game | 0 | 0 | 0.000% |
| 301472 | CF277D. Google Code Jam | 0 | 0 | 0.000% |
| 301473 | CF277E. Binary Tree on Plane | 0 | 0 | 0.000% |
| 301474 | CF278A. Circle Line | 0 | 0 | 0.000% |
| 301475 | CF278B. New Problem | 0 | 0 | 0.000% |
| 301476 | CF278C. Learning Languages | 0 | 0 | 0.000% |
| 301477 | CF278D. Set of Points | 0 | 0 | 0.000% |
| 301478 | CF278E. Game | 0 | 0 | 0.000% |
| 301479 | CF279A. Point on Spiral | 0 | 0 | 0.000% |
| 301480 | CF279B. Books | 0 | 0 | 0.000% |
| 301481 | CF279C. Ladder | 0 | 0 | 0.000% |
| 301482 | CF279D. The Minimum Number of Variables | 0 | 0 | 0.000% |
| 301483 | CF279E. Beautiful Decomposition | 0 | 0 | 0.000% |
| 301484 | CF280A. Rectangle Puzzle | 0 | 0 | 0.000% |
| 301485 | CF280B. Maximum Xor Secondary | 0 | 0 | 0.000% |
| 301486 | CF280C. Game on Tree | 0 | 0 | 0.000% |
| 301487 | CF280D. k-Maximum Subsequence Sum | 0 | 0 | 0.000% |
| 301488 | CF280E. Sequence Transformation | 0 | 0 | 0.000% |
| 301489 | CF281A. Word Capitalization | 0 | 0 | 0.000% |
| 301490 | CF281B. Nearest Fraction | 0 | 0 | 0.000% |
| 301491 | CF281C. Rectangle Puzzle | 0 | 0 | 0.000% |
| 301492 | CF281D. Maximum Xor Secondary | 0 | 0 | 0.000% |
| 301493 | CF281E. Game on Tree | 0 | 0 | 0.000% |
| 301494 | CF282A. Bit++ | 0 | 0 | 0.000% |
| 301495 | CF282B. Painting Eggs | 0 | 0 | 0.000% |
| 301496 | CF282C. XOR and OR | 0 | 0 | 0.000% |
| 301497 | CF282D. Yet Another Number Game | 0 | 0 | 0.000% |
| 301498 | CF282E. Sausage Maximization | 0 | 0 | 0.000% |
| 301499 | CF283A. Cows and Sequence | 0 | 0 | 0.000% |
| 301500 | CF283B. Cow Program | 0 | 0 | 0.000% |
| 301501 | CF283C. Coin Troubles | 0 | 0 | 0.000% |
| 301502 | CF283D. Cows and Cool Sequences | 0 | 0 | 0.000% |
| 301503 | CF283E. Cow Tennis Tournament | 0 | 0 | 0.000% |
| 301504 | CF284A. Cows and Primitive Roots | 0 | 0 | 0.000% |
| 301505 | CF284B. Cows and Poker Game | 0 | 0 | 0.000% |
| 301506 | CF284C. Cows and Sequence | 0 | 0 | 0.000% |
| 301507 | CF284D. Cow Program | 0 | 0 | 0.000% |
| 301508 | CF284E. Coin Troubles | 0 | 0 | 0.000% |
| 301509 | CF285A. Slightly Decreasing Permutations | 0 | 0 | 0.000% |
| 301510 | CF285B. Find Marble | 0 | 0 | 0.000% |
| 301511 | CF285C. Building Permutation | 0 | 0 | 0.000% |