|
|
5390 |
P799D Field expansion
|
0 / 0 |
提高
|
|
|
5386 |
P801A Vicious Keyboard
|
0 / 0 |
普及-
|
|
|
5359 |
P804D Expected diameter of a tree
|
0 / 0 |
NOI
|
|
|
5353 |
P807B T-Shirt Hunt
|
0 / 0 |
普及-
|
|
|
5338 |
P811A Vladik and Courtesy
|
0 / 0 |
普及-
|
|
|
5332 |
P812B Sagheer, the Hausmeister
|
0 / 0 |
普及
|
|
|
5327 |
P813B The Golden Age
|
0 / 0 |
普及
|
|
|
5320 |
P814C An impassioned circulation of affection
|
0 / 0 |
普及
|
|
|
5317 |
P815A Karen and Game
|
0 / 0 |
普及
|
|
|
5316 |
P815B Karen and Test
|
0 / 0 |
省选
|
|
|
5315 |
P815C Karen and Supermarket
|
0 / 0 |
NOI
|
|
|
5312 |
P816A Karen and Morning
|
0 / 0 |
普及-
|
|
|
5308 |
P817C Really Big Numbers
|
0 / 0 |
普及
|
|
|
5302 |
P818C Sofa Thief
|
0 / 0 |
提高
|
|
|
5289 |
P821B Okabe and Banana Trees
|
0 / 0 |
普及-
|
|
|
5284 |
P822B Crossword solving
|
0 / 0 |
普及-
|
|
|
5282 |
P822D My pretty girl Noora
|
0 / 0 |
普及
|
|
|
5278 |
P825B Five-In-a-Row
|
0 / 0 |
普及
|
|
|
5264 |
P830A Office Keys
|
0 / 0 |
普及
|
|
|
5262 |
P830C Bamboo Partition
|
0 / 0 |
省选
|
|
|
5257 |
P831C Jury Marks
|
0 / 0 |
普及
|
|
|
5249 |
P833C Ever-Hungry Krakozyabra
|
0 / 0 |
CTSC
|
|
|
5241 |
P835D Palindromic characteristics
|
0 / 0 |
普及
|
|
|
5237 |
P837B Flag of Berland
|
0 / 0 |
普及
|
|
|
5236 |
P837C Two Seals
|
0 / 0 |
普及
|
|
|
5233 |
P837F Prefix Sums
|
0 / 0 |
NOI
|
|
|
5231 |
P838A Binary Blocks
|
0 / 0 |
普及-
|
|
|
5224 |
P839B Game of the Rows
|
0 / 0 |
普及
|
|
|
5221 |
P839E Mother of Dragons
|
0 / 0 |
CTSC
|
|
|
5215 |
P841A Generous Kefa
|
0 / 0 |
普及-
|
|
|
5213 |
P842A Kirill And The Game
|
0 / 0 |
普及-
|
|
|
5207 |
P843B Interactive LowerBound
|
0 / 0 |
提高
|
|
|
5200 |
P845B Luba And The Ticket
|
0 / 0 |
普及
|
|
|
5194 |
P846A Curriculum Vitae
|
0 / 0 |
普及
|
|
|
5193 |
P846B Math Show
|
0 / 0 |
普及
|
|
|
5192 |
P846C Four Segments
|
0 / 0 |
普及
|
|
|
5169 |
P849B Tell Your World
|
0 / 0 |
普及
|
|
|
5168 |
P850A Five Dimensional Points
|
0 / 0 |
普及
|
|
|
5164 |
P850E Random Elections
|
0 / 0 |
CTSC
|
|
|
5160 |
P852A Digits
|
0 / 0 |
NOI
|
|
|
5152 |
P852I Dating
|
0 / 0 |
省选
|
|
|
5146 |
P854A Fraction
|
0 / 0 |
普及-
|
|
|
5144 |
P855A Tom Riddle's Diary
|
0 / 0 |
普及-
|
|
|
5143 |
P855B Marvolo Gaunt's Ring
|
0 / 0 |
普及
|
|
|
5137 |
P856A Set Theory
|
0 / 0 |
普及
|
|
|
5131 |
P858A k-rounding
|
0 / 0 |
普及-
|
|
|
5130 |
P858B Which floor?
|
0 / 0 |
普及
|
|
|
5124 |
P859B Lazy Security Guard
|
0 / 0 |
普及-
|
|
|
5111 |
P863A Quasi-palindrome
|
0 / 0 |
普及-
|
|
|
5110 |
P863B Kayaking
|
0 / 0 |
普及
|
|
|
5103 |
P864B Polycarp and Letters
|
0 / 0 |
普及-
|
|
|
5094 |
P865E Hex Dyslexia
|
0 / 0 |
CTSC
|
|
|
5093 |
P865F Egg Roulette
|
0 / 0 |
CTSC
|
|
|
5090 |
P868A Bark to Unlock
|
0 / 0 |
普及-
|
|
|
5088 |
P868C Qualification Rounds
|
0 / 0 |
普及
|
|
|
5087 |
P868D Huge Strings
|
0 / 0 |
省选
|
|
|
5083 |
P869A The Artful Expedient
|
0 / 0 |
普及-
|
|
|
5080 |
P869D The Overdosing Ubiquity
|
0 / 0 |
CTSC
|
|
|
5078 |
P870A Search for Pretty Integers
|
0 / 0 |
普及-
|
|
|
5075 |
P870D Something with XOR Queries
|
0 / 0 |
提高
|
|
|
5067 |
P873E Awards For Contestants
|
0 / 0 |
省选
|
|
|
5065 |
P875A Classroom Watch
|
0 / 0 |
普及-
|
|
|
5056 |
P877B Nikita and string
|
0 / 0 |
普及
|
|
|
5037 |
P883H Palindromic Cut
|
0 / 0 |
普及
|
|
|
5025 |
P886A ACM ICPC
|
0 / 0 |
普及-
|
|
|
5018 |
P887B Cubes for Masha
|
0 / 0 |
普及-
|
|
|
5017 |
P887C Solution for Cube
|
0 / 0 |
普及
|
|
|
5013 |
P888A Local Extrema
|
0 / 0 |
普及-
|
|
|
5005 |
P891A Pride
|
0 / 0 |
普及
|
|
|
4997 |
P893B Beautiful Divisors
|
0 / 0 |
普及-
|
|
|
4992 |
P894A QAQ
|
0 / 0 |
普及-
|
|
|
4989 |
P894D Ralph And His Tour in Binary Country
|
0 / 0 |
省选
|
|
|
4987 |
P895A Pizza Separation
|
0 / 0 |
普及-
|
|
|
4976 |
P897B Chtholly's request
|
0 / 0 |
普及-
|
|
|
4974 |
P898B Proper Nutrition
|
0 / 0 |
普及-
|
|
|
4970 |
P898F Restoring the Expression
|
0 / 0 |
省选
|
|
|
4961 |
P900C Remove Extra One
|
0 / 0 |
普及
|
|
|
4947 |
P903E Swapping Characters
|
0 / 0 |
省选
|
|
|
4943 |
P906B Seating of Students
|
0 / 0 |
省选
|
|
|
4942 |
P906C Party
|
0 / 0 |
NOI
|
|
|
4939 |
P907A Masha and Bears
|
0 / 0 |
普及-
|
|
|
4937 |
P908A New Year and Counting Cards
|
0 / 0 |
普及-
|
|
|
4936 |
P908B New Year and Buggy Bot
|
0 / 0 |
普及-
|
|
|
4935 |
P908C New Year and Curling
|
0 / 0 |
普及
|
|
|
4929 |
P909A Generate Login
|
0 / 0 |
普及-
|
|
|
4919 |
P911B Two Cakes
|
0 / 0 |
普及-
|
|
|
4918 |
P911C Three Garlands
|
0 / 0 |
普及-
|
|
|
4917 |
P911D Inversion Counting
|
0 / 0 |
普及
|
|
|
4911 |
P912C Perun, Ult!
|
0 / 0 |
NOI
|
|
|
4905 |
P913D Too Easy Problems
|
0 / 0 |
普及
|
|
|
4900 |
P914A Perfect Squares
|
0 / 0 |
普及-
|
|
|
4898 |
P914C Travelling Salesman and Special Numbers
|
0 / 0 |
普及
|
|
|
4895 |
P914F Substrings in a String
|
0 / 0 |
CTSC
|
|
|
4885 |
P916A Jamie and Alarm Snooze
|
0 / 0 |
普及-
|
|
|
4875 |
P918A Eleven
|
0 / 0 |
普及-
|
|
|
4873 |
P919A Supermarket
|
0 / 0 |
普及-
|
|
|
4872 |
P919B Perfect Number
|
0 / 0 |
普及-
|
|
|
4871 |
P919C Seat Arrangements
|
0 / 0 |
普及-
|
|
|
4862 |
P920F SUM and REPLACE
|
0 / 0 |
提高
|
|
|
4861 |
P920G List Of Integers
|
0 / 0 |
省选
|
