|
|
7589 |
P262B Roma and Changing Signs
|
0 / 0 |
普及-
|
|
|
7588 |
P263A Beautiful Matrix
|
0 / 0 |
普及-
|
|
|
7587 |
P263B Squares
|
0 / 0 |
普及-
|
|
|
7586 |
P263C Circle of Numbers
|
0 / 0 |
提高
|
|
|
7585 |
P263D Cycle in Graph
|
0 / 0 |
普及
|
|
|
7584 |
P263E Rhombus
|
0 / 0 |
NOI
|
|
|
7583 |
P264A Escape from Stones
|
0 / 0 |
普及-
|
|
|
7582 |
P264B Good Sequences
|
0 / 0 |
普及
|
|
|
7581 |
P264C Choosing Balls
|
0 / 0 |
提高
|
|
|
7580 |
P264D Colorful Stones
|
0 / 0 |
NOI
|
|
|
7579 |
P264E Roadside Trees
|
0 / 0 |
CTSC
|
|
|
7578 |
P265A Colorful Stones (Simplified Edition)
|
0 / 0 |
普及-
|
|
|
7577 |
P265B Roadside Trees (Simplified Edition)
|
0 / 0 |
普及-
|
|
|
7576 |
P266A Stones on the Table
|
0 / 0 |
普及-
|
|
|
7575 |
P266B Queue at the School
|
0 / 0 |
普及-
|
|
|
7574 |
P266C Below the Diagonal
|
0 / 0 |
提高
|
|
|
7573 |
P266D BerDonalds
|
0 / 0 |
NOI
|
|
|
7572 |
P266E More Queries to Array...
|
0 / 0 |
NOI
|
|
|
7571 |
P267A Subtractions
|
0 / 0 |
普及-
|
|
|
7570 |
P267B Dominoes
|
0 / 0 |
提高
|
|
|
7569 |
P267C Berland Traffic
|
0 / 0 |
CTSC
|
|
|
7568 |
P268A Games
|
0 / 0 |
普及-
|
|
|
7567 |
P268B Buttons
|
0 / 0 |
普及-
|
|
|
7566 |
P268C Beautiful Sets of Points
|
0 / 0 |
普及
|
|
|
7565 |
P268D Wall Bars
|
0 / 0 |
省选
|
|
|
7564 |
P268E Playlist
|
0 / 0 |
提高
|
|
|
7563 |
P269A Magical Boxes
|
0 / 0 |
普及
|
|
|
7562 |
P269B Greenhouse Effect
|
0 / 0 |
普及
|
|
|
7561 |
P269C Flawed Flow
|
0 / 0 |
提高
|
|
|
7560 |
P269D Maximum Waterfall
|
0 / 0 |
CTSC
|
|
|
7559 |
P269E String Theory
|
0 / 0 |
CTSC
|
|
|
7558 |
P270A Fancy Fence
|
0 / 0 |
普及-
|
|
|
7557 |
P270B Multithreading
|
0 / 0 |
普及-
|
|
|
7556 |
P271A Beautiful Year
|
0 / 0 |
普及-
|
|
|
7555 |
P271B Prime Matrix
|
0 / 0 |
普及-
|
|
|
7554 |
P271C Secret
|
0 / 0 |
普及
|
|
|
7553 |
P271D Good Substrings
|
0 / 0 |
普及
|
|
|
7552 |
P271E Three Horses
|
0 / 0 |
省选
|
|
|
7551 |
P272A Dima and Friends
|
0 / 0 |
普及-
|
|
|
7550 |
P272B Dima and Sequence
|
0 / 0 |
普及-
|
|
|
7549 |
P272C Dima and Staircase
|
0 / 0 |
普及
|
|
|
7548 |
P272D Dima and Two Sequences
|
0 / 0 |
普及
|
|
|
7547 |
P272E Dima and Horses
|
0 / 0 |
省选
|
|
|
7546 |
P273D Dima and Figure
|
0 / 0 |
NOI
|
|
|
7545 |
P273E Dima and Game
|
0 / 0 |
CTSC
|
|
|
7544 |
P274A k-Multiple Free Set
|
0 / 0 |
普及
|
|
|
7543 |
P274B Zero Tree
|
0 / 0 |
普及
|
|
|
7542 |
P274C The Last Hole!
|
0 / 0 |
CTSC
|
|
|
7541 |
P274D Lovely Matrix
|
0 / 0 |
省选
|
|
|
7540 |
P274E Mirror Room
|
0 / 0 |
CTSC
|
|
|
7539 |
P275A Lights Out
|
0 / 0 |
普及-
|
|
|
7538 |
P275B Convex Shape
|
0 / 0 |
普及
|
|
|
7537 |
P276A Lunch Rush
|
0 / 0 |
普及-
|
|
|
7536 |
P276B Little Girl and Game
|
0 / 0 |
普及-
|
|
|
7535 |
P276C Little Girl and Maximum Sum
|
0 / 0 |
普及
|
|
|
7534 |
P276D Little Girl and Maximum XOR
|
0 / 0 |
普及
|
|
|
7533 |
P276E Little Girl and Problem on Trees
|
0 / 0 |
提高
|
|
|
7532 |
P277A Learning Languages
|
0 / 0 |
普及-
|
|
|
7531 |
P277B Set of Points
|
0 / 0 |
省选
|
|
|
7530 |
P277C Game
|
0 / 0 |
NOI
|
|
|
7529 |
P277D Google Code Jam
|
0 / 0 |
CTSC
|
|
|
7528 |
P277E Binary Tree on Plane
|
0 / 0 |
NOI
|
|
|
7527 |
P278A Circle Line
|
0 / 0 |
普及-
|
|
|
7526 |
P278B New Problem
|
0 / 0 |
普及
|
|
|
7525 |
P279A Point on Spiral
|
0 / 0 |
普及-
|
|
|
7524 |
P279B Books
|
0 / 0 |
普及-
|
|
|
7523 |
P279C Ladder
|
0 / 0 |
普及
|
|
|
7522 |
P279D The Minimum Number of Variables
|
0 / 0 |
省选
|
|
|
7521 |
P279E Beautiful Decomposition
|
0 / 0 |
普及
|
|
|
7520 |
P280A Rectangle Puzzle
|
0 / 0 |
提高
|
|
|
7519 |
P280B Maximum Xor Secondary
|
0 / 0 |
普及
|
|
|
7518 |
P280C Game on Tree
|
0 / 0 |
省选
|
|
|
7517 |
P280D k-Maximum Subsequence Sum
|
0 / 0 |
CTSC
|
|
|
7516 |
P280E Sequence Transformation
|
0 / 0 |
CTSC
|
|
|
7515 |
P281A Word Capitalization
|
0 / 0 |
普及-
|
|
|
7514 |
P281B Nearest Fraction
|
0 / 0 |
普及
|
|
|
7513 |
P282A Bit++
|
0 / 0 |
普及-
|
|
|
7512 |
P282B Painting Eggs
|
0 / 0 |
普及
|
|
|
7511 |
P282C XOR and OR
|
0 / 0 |
普及
|
|
|
7510 |
P282D Yet Another Number Game
|
0 / 0 |
提高
|
|
|
7509 |
P282E Sausage Maximization
|
0 / 0 |
省选
|
|
|
7508 |
P283A Cows and Sequence
|
0 / 0 |
普及
|
|
|
7507 |
P283B Cow Program
|
0 / 0 |
普及
|
|
|
7506 |
P283C Coin Troubles
|
0 / 0 |
提高
|
|
|
7505 |
P283D Cows and Cool Sequences
|
0 / 0 |
NOI
|
|
|
7504 |
P283E Cow Tennis Tournament
|
0 / 0 |
CTSC
|
|
|
7503 |
P284A Cows and Primitive Roots
|
0 / 0 |
普及-
|
|
|
7502 |
P284B Cows and Poker Game
|
0 / 0 |
普及-
|
|
|
7501 |
P285A Slightly Decreasing Permutations
|
0 / 0 |
普及-
|
|
|
7500 |
P285B Find Marble
|
0 / 0 |
普及-
|
|
|
7499 |
P285C Building Permutation
|
0 / 0 |
普及-
|
|
|
7498 |
P285D Permutation Sum
|
0 / 0 |
普及
|
|
|
7497 |
P285E Positions in Permutations
|
0 / 0 |
CTSC
|
|
|
7496 |
P286A Lucky Permutation
|
0 / 0 |
普及-
|
|
|
7495 |
P286B Shifting
|
0 / 0 |
省选
|
|
|
7494 |
P286C Main Sequence
|
0 / 0 |
提高
|
|
|
7493 |
P286D Tourists
|
0 / 0 |
CTSC
|
|
|
7492 |
P286E Ladies' Shop
|
0 / 0 |
CTSC
|
|
|
7491 |
P287A IQ Test
|
0 / 0 |
普及-
|
|
|
7490 |
P287B Pipeline
|
0 / 0 |
普及
|
