AtCoder

AtCoder Beginner Contest

• ABC001
  • A - 積雪深差
  • B - 視程の通報
  • C - 風力観測
  • D - 感雨時刻の整理
• ABC049
  • C - 白昼夢
• ABC081
  • A - Placing Marbles
  • B - Shift only
• ABC083
  • B - Some Sums
• ABC085
  • B - Kagami Mochi
  • C - Otoshidama
• ABC086
  • A - Product
  • C - Traveling
• ABC087
  • B - Coins
• ABC088
  • B - Card Game for Two
• ABC366
  • A - Election 2
  • B - Vertical Writing
  • C - Balls and Bag Query
• ABC367
  • A - Shout Everyday
  • B - Cut .0
  • C - Enumerate Sequences
• ABC368
  • A - Cut
  • B - Decrease 2 max elements
  • C - Triple Attack
• ABC369
  • A - 369
  • B - Piano 3
  • C - Count Arithmetic Subarrays
• ABC370
  • A - Raise Both Hands
  • B - BInary Alchemy
  • C - Word Ladder
• ABC371
  • A - Jiro
  • B - Taro
  • C - Make Isomorphic
• ABC372
  • A - delete .
  • B - 3^A
  • C - Count ABC Again
• ABC373
  • A - September
  • B - 1D Keyboard
  • C - Max Ai+Bj
• ABC374
  • A - Takahashi san 2
  • B - Unvarnished Report
  • C - Separated Lunch
• ABC375
  • A - Seats
  • B - Traveling Takahashi Problem
  • C - Spiral Rotation
• ABC376
  • A - Candy Button
  • B - Hands on Ring (Easy)
  • C - Prepare Another Box
• ABC377
  • A - Rearranging ABC
  • B - Avoid Rook Attack
  • C - Avoid Knight Attack
• ABC378
  • A - Pairing
  • B - Garbage Collection
  • C - Repeating
• ABC379
  • A - Cyclic
  • B - Strawberries
  • C - Sowing Stones
• ABC380
  • A - 123233
  • B - Hurdle Parsing
  • C - Move Segment
• ABC381
  • A - 11/22 String
  • B - 1122 String
  • C - 11/22 Substring
• ABC382
  • A - Daily Cookie
  • B - Daily Cookie 2
  • C - Kaiten Sushi
• ABC383
  • A - Humidifier 1
  • B - Humidifier 2
  • C - Humidifier 3
• ABC384
  • A - aaaadaa
  • B - ARC Division
  • C - Perfect Standings
• ABC385
  • A - Equally
  • B - Santa Claus 1
  • C - Illuminate Buildings
• ABC386
  • A - Full House 2
  • B - Calculator
  • C - Operate 1
• ABC387
  • A - Happy New Year 2025
  • B - 9x9 Sum
  • C - Snake Numbers
• ABC388
  • A - ?UPC
  • B - Heavy Snake
  • C - Various Kagamimochi
• ABC389
  • A - 9x9
  • B - tcaF
  • C - Snake Queue
• ABC390
  • A - 12435
  • B - Geometric Sequence
  • C - Paint to make a rectangle
• ABC391
  • A - Lucky Direction
  • B - Seek Grid
  • C - Pigeonhole Query
• ABC392
  • A - Shuffled Equation
  • B - Who is Missing?
  • C - Bib
• ABC393
  • A - Poisonous Oyster
  • B - A..B..C
  • C - Make it Simple
• ABC394
  • A - 22222
  • B - cat
  • C - Debug
• ABC395
  • A - Strictly Increasing?
  • B - Make Target
  • C - Shortest Duplicate Subarray
• ABC396
  • A - Triple Four
  • B - Card Pile
  • C - Buy Balls
• ABC397
  • A - Thermometer
  • B - Ticket Gate Log
  • C - Variety Split Easy
• ABC398
  • A - Doors in the Center
  • B - Full House 3
  • C - Uniqueness
• ABC399
  • A - Hamming Distance
  • B - Ranking with Ties
  • C - Make it Forest
• ABC400
  • A - ABC400 Party
  • B - Sum of Geometric Series
  • C - 2^a b^2
• ABC401
  • A - Status Code
  • B - Unauthorized
  • C - K-bonacci
• ABC402
  • A - CBC
  • B - Restaurant Queue
  • C - Dislike Foods
• ABC403
  • A - Odd Position Sum
  • B - Four Hidden
  • C - 403 Forbidden
• ABC404
  • A - Not Found
  • B - Grid Rotation
  • C - Cycle Graph?
• ABC405
  • A - Is it rated?
  • B - Not All
  • C - Sum of Product
• ABC406
  • A - Not Acceptable
  • B - Product Calculator
  • C - ~
• ABC407
  • A - Approximation
  • B - P(X or Y)
  • C - Security 2
• ABC408
  • A - Timeout
  • B - Compression
  • C - Not All Covered
• ABC409
  • A - Conflict
  • B - Citation
  • C - Equilateral Triangle
• ABC410
  • A - G1
  • B - Reverse Proxy
  • C - Rotatable Array
• ABC411
  • A - Required Length
  • B - Distance Table
  • C - Black Intervals
• ABC412
  • A - Task Failed Successfully
  • B - Precondition
  • C - Giant Domino
• ABC413
  • A - Content Too Large
  • B - cat 2
  • C - Large Queue
• ABC414
  • A - Streamer Takahashi
  • B - String Too Long
  • C - Palindromic in Both Bases
• ABC415
  • A - Unsupported Type
  • B - Pick Two
  • C - Mixture
• ABC416
  • A - Vacation Validation
  • B - 1D Akari
  • C - Concat (X-th)
• ABC417
  • A - A Substring
  • B - Search and Delete
  • C - Distance Indicators
• ABC418
  • A - I'm a teapot
  • B - You're a teapot
  • C - Flush
• ABC419
  • A - AtCoder Language
  • B - Get Min
  • C - King's Summit
• ABC420
  • A - What month is it?
  • B - Most Minority
  • C - Sum of Min Query
  • D - Toggle Maze
• ABC421
  • A - Misdelivery
  • B - Fibonacci Reversed
  • C - Alternated
• ABC422
  • A - Stage Clear
  • B - Looped Rope
  • C - AtCoder AAC Contest

AtCoder Regular Contest

競プロ典型90問

• 001 - Yokan Party
• 002 - Encyclopedia of Parentheses
• 003 - Longest Circular Road
• 004 - Cross Sum