hantina

UID: 2, Registered at 2025-8-4 18:46:17, last login at 2026-3-15 14:10:07, last active at 2026-3-27 10:01:16.

Solved 119 problems, RP: 38.63 (No. 19)

SU

Bio

This person is lazy and didn't write anything.
Accepted Problems
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CSPJ2020CS
Attended Trainings
第三层次配套练习
Created Problems
CSPJ2019初赛

CSPJ2020初赛

2021CSPJ初赛

cspj组2022年初赛

CSJ2023初赛

CSPJ2024初赛

CSPJ2025初赛

2021CSPS初赛

2011noip提高组初赛

均分纸牌

连线问题

B 还是数据结构

D 再无数据结构

A 数学题 1

B 数学题 2

C 数学题 -1

D 数学题 0

T1、收割南瓜（pumpkin）

T2、购物（shopping）

T3、巧克力（chocolate）

T4、运输计划（transport）

【入门】树的公共祖先（LCA）

【基础】树的高度（2）

【入门】二叉树的遍历

【入门】哈夫曼树

【入门】哈夫曼树（2）

【入门】校门外的树

【基础】连胜统计

【基础】相似数

【例54.2】学生组队

【例60.2】约瑟夫问题

合影效果

【例53.2】白细胞计数

练55.4 沙堡

练55.3 收益最大

【例55.2】约翰书架

和为给定数

数字统计

区间和

找第一个只出现一次的字符

判断字符串是否为回文

谁考了第k名

奇数单增序列

统计数字

Your Ride Is Here 你的旅途由此开始

Transformations 转换

Name That Number 序号命名

Palindromic Squares,回文平方

Dual Palindromes 双重回文

Mixing Milk 挤牛奶

Barn Repair 修理牛棚

Calf Flac

Prime Cryptarithm 密码运算

Packing Rectangles

The Clocks

Arithmetic Progressions

Mother's Milk 母亲的牛奶

Number Triangles 数字三角形

Prime Palindromes 回文质数

Superprime Rib

Checker Challenge

The Castle 城堡

Ordered Fractions 有序分数

Sorting a Three-Valued Sequence 三值序列排序

Healthy Holsteins 健康的荷斯坦奶牛

Hamming Codes 汉明码

Preface Numbering 序言页码

Subset Sums 子集的和

Runaround Numbers 循环数

Party Lamps 派对的灯

Longest Prefix 最长前缀

Cow Pedigrees 牛之关系谱

Zero Sum 零和序列

Money Systems 货币系统

Controlling Companies 控股公司

The Tamworth Two 两只奶牛

Overfencing 穿越栅栏

Cow Tours 牛的旅行

Bessie Come Home 奶牛回家

Fractions to Decimals 分数化小数

Agri-Net 最短网络

Score Inflation 得分通胀

Humble Numbers 谦虚数字

Shaping Regions

Contact 联系

Stamps 邮票

Factorials 阶乘

Stringsobits 比特串

Spinning Wheels 纺轮

Feed Ratios 饲料调配

Magic Squares

Sweet Butter 香甜的黄油

Riding the Fences 骑马修栅栏

Shopping Offers 购物优惠

Camelot 卡米洛特

Home on the Range 家的范围

A Game 游戏

Closed Fences

American Heritage 美国传统

Electric Fence 通电围栏

Raucous Rockers 喧嚣摇滚乐队

Beef McNuggets 麦乐牛块

Fence Rails

Fence Loops 围栏圈

Cryptcowgraphy

Drainage Ditches 排水沟

The Perfect Stall 完美牛棚

Job Processing 产品处理

Cowcycles

Buy Low, Buy Lower 低买

The Primes

Street Race 街头竞速

Letter Game 字母游戏

Shuttle Puzzle 穿梭谜题

Pollutant Control 控制污染奶

Frame Up 堆叠相框

Fencing the Cows 围住奶牛

Starry Night 星空之夜

Musical Themes 音乐主题

Snail Trails 蜗牛漫步

Electric Fences

Wisconsin Squares

Milk Measuring 牛奶量取

Window Area 窗口面积

Network of Schools 学校网络

Big Barn 巨大牛棚

All Latin Squares

Canada Tour 加拿大之旅

Character Recognition

Betsy's Tour

Telecowmunication 奶牛通信

Picture 海报

Hidden Password 隐藏密码

Towfive 二五

Postal Vans 邮政货车

A Rectangular Barn 矩形牛棚

Cow XOR 牛异或

出栈序列统计

队列和栈

栈的基本操作

合法出栈序列

栈基本操作

堆栈的使用

[ABC335C] Loong Tracking

A - 500 Yen Coins

B - Count ABC

C - Count Order

D - Semi Common Multiple

E - Change a Little Bit

F - Xor Shift

A - Next Alphabet

B - Achieve the Goal

[ABC151D] Maze Master

[ABC151E] Max-Min Sums

[ABC151F] Enclose All

[ABC152A] AC or WA

[ABC152B] Comparing Strings

[ABC152C] Low Elements

[ABC152D] Handstand 2

[ABC152E] Flatten

[ABC152F] Tree and Constraints

[ABC153A] Serval vs Monster

[ABC153B] Common Raccoon vs Monster

[ABC153C] Fennec vs Monster

[ABC153D] Caracal vs Monster

[ABC153E] Crested Ibis vs Monster

[ABC153F] Silver Fox vs Monster

[ABC154A] Remaining Balls

[ABC154B] I miss you...

[ABC154C] Distinct or No

[ABC154D] Dice in Line

[ABC154E] Almost Everywhere Zero

[ABC154F] Many Many Paths

[ABC155A] Poor

[ABC155B] Papers, Please

[ABC155C] Poll

[ABC155D] Pairs

[ABC155E] Payment

[ABC155F] Perils in Parallel

[ABC156A] Beginner

[ABC156B] Digits

[ABC156C] Rally

[ABC156D] Bouquet

[ABC156E] Roaming

[ABC156F] Modularness

[ABC157A] Duplex Printing

[ABC157B] Bingo

[ABC157C] Guess The Number

[ABC157D] Friend Suggestions

[ABC157E] Simple String Queries

[ABC157F] Yakiniku Optimization Problem

[ABC158A] Station and Bus

[ABC158B] Count Balls

[ABC158C] Tax Increase

[ABC158D] String Formation

[ABC158E] Divisible Substring

[ABC158F] Removing Robots

[ABC159A] The Number of Even Pairs

[ABC159B] String Palindrome

[ABC159C] Maximum Volume

[ABC159D] Banned K

[ABC159E] Dividing Chocolate

[ABC159F] Knapsack for All Segments

[ABC160A] Coffee

[ABC160B] Golden Coins

[ABC160C] Traveling Salesman around Lake

[ABC160D] Line++

[ABC160E] Red and Green Apples

[ABC160F] Distributing Integers

[ABC161A] ABC Swap

[ABC161B] Popular Vote

[ABC161C] Replacing Integer

[ABC161D] Lunlun Number

[ABC161E] Yutori

[ABC161F] Division or Subtraction

[ABC162A] Lucky 7

[ABC162B] FizzBuzz Sum

[ABC162C] Sum of gcd of Tuples (Easy)

[ABC162D] RGB Triplets

[ABC162E] Sum of gcd of Tuples (Hard)

[ABC162F] Select Half

[ABC163A] Circle Pond

[ABC163B] Homework

[ABC163C] management

[ABC163D] Sum of Large Numbers

[ABC163E] Active Infants

[ABC163F] path pass i

[ABC164A] Sheep and Wolves

[ABC164B] Battle

[ABC164C] gacha

[ABC164D] Multiple of 2019

[ABC164E] Two Currencies

[ABC164F] I hate Matrix Construction

[ABC165A] We Love Golf

[ABC165B] 1%

[ABC165C] Many Requirements

[ABC165D] Floor Function

[ABC165E] Rotation Matching

[ABC165F] LIS on Tree

[ABC166A] A?C

[ABC166B] Trick or Treat

[ABC166C] Peaks

[ABC166D] I hate Factorization

[ABC166E] This Message Will Self-Destruct in 5s

[ABC166F] Three Variables Game

[ABC167A] Registration

[ABC167B] Easy Linear Programming

[ABC167C] Skill Up

[ABC167D] Teleporter

[ABC167E] Colorful Blocks

[ABC167F] Bracket Sequencing

[ABC168A] ∴ (Therefore)

[ABC168B] ... (Triple Dots)

[ABC168C] : (Colon)

[ABC168D] .. (Double Dots)

[ABC168E] ∙ (Bullet)

[ABC168F] . (Single Dot)

[ABC169A] Multiplication 1

[ABC169B] Multiplication 2

[ABC169C] Multiplication 3

[ABC169D] Div Game

[ABC169E] Count Median

[ABC169F] Knapsack for All Subsets

[ABC170A] Five Variables

[ABC170B] Crane and Turtle

[ABC170C] Forbidden List

[ABC170D] Not Divisible

[ABC170E] Smart Infants

[ABC170F] Pond Skater

[ABC171A] αlphabet

[ABC171B] Mix Juice

[ABC171C] One Quadrillion and One Dalmatians

[ABC171D] Replacing

[ABC171E] Red Scarf

[ABC171F] Strivore

[ABC172A] Calc

[ABC172B] Minor Change

[ABC172C] Tsundoku

[ABC172D] Sum of Divisors

[ABC172E] NEQ

[ABC172F] Unfair Nim

[ABC173A] Payment

[ABC173B] Judge Status Summary

[ABC173C] H and V

[ABC173D] Chat in a Circle

[ABC173E] Multiplication 4

[ABC173F] Intervals on Tree

[ABC174A] Air Conditioner

[ABC174B] Distance

[ABC174C] Repsept

[ABC174D] Alter Altar

[ABC174E] Logs

[ABC174F] Range Set Query

[ABC175A] Rainy Season

[ABC175B] Making Triangle

[ABC175C] Walking Takahashi

[ABC175D] Moving Piece

[ABC175E] Picking Goods

[ABC175F] Making Palindrome

[ABC176A] Takoyaki

[ABC176B] Multiple of 9

[ABC176C] Step

[ABC176D] Wizard in Maze

[ABC176E] Bomber

[ABC176F] Brave CHAIN

[ABC177A] Don't be late

ABC177B] Substring

[ABC177C] Sum of product of pairs

[ABC177D] Friends

[ABC177E] Coprime

[ABC177F] I hate Shortest Path Problem

[ABC178A] Not

[ABC178B] Product Max

[ABC178C] Ubiquity

[ABC178D] Redistribution

[ABC178E] Dist Max

[ABC178F] Contrast

[ABC179A] Plural Form

[ABC179B] Go to Jail

[ABC179C] A x B + C

[ABC179D] Leaping Tak

[ABC179E] Sequence Sum

[ABC179F] Simplified Reversi

[ABC180A] box

[ABC180B] Various distances

[ABC180C] Cream puff

[ABC180D] Takahashi Unevolved

[ABC180E] Traveling Salesman among Aerial Cities

[ABC180F] Unbranched

[ABC181A] Heavy Rotation

[ABC181B] Trapezoid Sum

[ABC181C] Collinearity

[ABC181D] Hachi

[ABC181E] Transformable Teacher

[ABC181F] Silver Woods

AT_abc182_a

[ABC182C] To 3

[ABC182D] Wandering

[ABC182E] Akari

[ABC182F] Valid payments

[ABC182B] Almost GCD

[ABC183B] Billiards

[ABC183C] Travel

[ABC183D] Water Heater

[ABC183E] Queen on Grid

[ABC183F] Confluence

[ABC182F] Valid payments

[ABC184A] Determinant

[ABC184B] Quizzes

[ABC184C] Super Ryuma

[ABC184D] increment of coins

[ABC184E] Third Avenue

[ABC184F] Programming Contest

[ABC185A] ABC Preparation

[ABC185B] Smartphone Addiction

[ABC185C] Duodecim Ferra

[ABC185D] Stamp

[ABC185E] Sequence Matching

[ABC185F] Range Xor Query

[ABC186A] Brick

[ABC186B] Blocks on Grid

[ABC186C] Unlucky 7

[ABC186D] Sum of difference

[ABC186E] Throne

[ABC186F] Rook on Grid

[ABC187A] Large Digits

[ABC187B] Gentle Pairs

[ABC187C] 1-SAT

[ABC187D] Choose Me

[ABC187E] Through Path

[ABC187F] Close Group

[ABC188A] Three-Point Shot

[ABC188B] Orthogonality

[ABC188C] ABC Tournament

[ABC188D] Snuke Prime

[ABC188E] Peddler

[ABC188F] +1-1x2

[ABC189A] Slot

[ABC189B] Alcoholic

[ABC189C] Mandarin Orange

[ABC189D] Logical Expression

[ABC189E] Rotate and Flip

[ABC189F] Sugoroku2

[ABC190A] Very Very Primitive Game

[ABC190B] Magic 3

[ABC190C] Bowls and Dishes

[ABC190D] Staircase Sequences

[ABC190E] Magical Ornament

[ABC190F] Shift and Inversions

[ABC191A] Vanishing Pitch

[ABC191B] Remove It

[ABC191C] Digital Graffiti

[ABC191D] Circle Lattice Points

[ABC191E] Come Back Quickly

[ABC191F] GCD or MIN

[ABC192A] Star

[ABC192B] uNrEaDaBlE sTrInG

[ABC192C] Kaprekar Number

[ABC192D] Base n

[ABC192E] Train

[ABC192F] Potion

[ABC193A] Discount

[ABC193B] Play Snuke

[ABC193C] Unexpressed

[ABC193D] Poker

[ABC193E] Oversleeping

[ABC193F] Zebraness

[ABC194A] I Scream

[ABC194B] Job Assignment

[ABC194C] Squared Error

[ABC194D] Journey

[ABC194F] Digits Paradise in Hexadecimal

[ABC194E] Mex Min

[ABC195A] Health M Death

[ABC195B] Many Oranges

[ABC195C] Comma

[ABC195D] Shipping Center

[ABC195E] Lucky 7 Battle

[ABC195F] Coprime Present

[ABC196A] Difference Max

[ABC196B] Round Down

[ABC196C] Doubled

[ABC196D] Hanjo

[ABC196E] Filters

[ABC196F] Substring 2

[ABC197A] Rotate

[ABC197B] Visibility

[ABC197C] ORXOR

[ABC197D] Opposite

[ABC197E] Traveler

[ABC197F] Construct a Palindrome

[ABC198A] Div

[ABC198B] Palindrome with leading zeros

[ABC198C] Compass Walking

[ABC198D] Send More Money

[ABC198E] Unique Color

[ABC198F] Cube

[ABC199A] Square Inequality

[ABC199B] Intersection

[ABC199C] IPFL

[ABC199D] RGB Coloring 2

[ABC199E] Permutation

[ABC199F] Graph Smoothing

[ABC200A] Century

[ABC200A] Century

[ABC200B] 200th ABC-200

[ABC200B] 200th ABC-200

[ABC200C] Ringo's Favorite Numbers 2

[ABC200C] Ringo's Favorite Numbers 2

[ABC200D] Happy Birthday! 2

[ABC200D] Happy Birthday! 2

[ABC200E] Patisserie ABC 2

[ABC200E] Patisserie ABC 2

[ABC200F] Minflip Summation

[ABC200F] Minflip Summation

[ABC201A] Tiny Arithmetic Sequence

[ABC201B] Do you know the second highest mountain?

[ABC201C] Secret Number

[ABC201D] Game in Momotetsu World

[ABC201E] Xor Distances

[ABC201F] Insertion Sort

[ABC202A] Three Dice

[ABC202B] 180°

[ABC202C] Made Up

[ABC202D] aab aba baa

[ABC202E] Count Descendants

[ABC202F] Integer Convex Hull

[ABC203A] Chinchirorin

[ABC203B] AtCoder Condominium

[ABC203C] Friends and Travel costs

[ABC203D] Pond

[ABC203E] White Pawn

[ABC203F] Weed

[ABC204A] Rock-paper-scissors

[ABC204B] Nuts

[ABC204C] Tour

[ABC204D] Cooking

[ABC204E] Rush Hour 2

[ABC204F] Hanjo 2

[ABC205A] kcal

[ABC205B] Permutation Check

[ABC205C] POW

[ABC205D] Kth Excluded

[ABC205E] White and Black Balls

[ABC205F] Grid and Tokens

[ABC206A] Maxi-Buying

[ABC206B] Savings

[ABC206C] Swappable

[ABC206D] KAIBUNsyo

[ABC206E] Divide Both

[ABC206F] Interval Game 2

[ABC207A] Repression

[ABC207B] Hydrate

[ABC207C] Many Segments

[ABC207D] Congruence Points

[ABC207E] Mod i

[ABC207F] Tree Patrolling

[ABC208A] Rolling Dice

[ABC208B] Factorial Yen Coin

[ABC208C] Fair Candy Distribution

[ABC208D] Shortest Path Queries 2

[ABC208E] Digit Products

[ABC208F] Cumulative Sum

[ABC209A] Counting

[ABC209B] Can you buy them all?

[ABC209C] Not Equal

[ABC209D] Collision

[ABC209E] Shiritori

[ABC209F] Deforestation

[ABC210A] Cabbages

[ABC210B] Bouzu Mekuri

[ABC210C] Colorful Candies

[ABC210D] National Railway

[ABC210E] Ring MST

[ABC210F] Coprime Solitaire

[ABC211A] Blood Pressure

[ABC211B] Cycle Hit

[ABC211C] chokudai

[ABC211D] Number of Shortest paths

[ABC211E] Red Polyomino

[ABC211F] Rectilinear Polygons

[ABC212A] Alloy

[ABC212B] Weak Password

[ABC212C] Min Difference

[ABC212D] Querying Multiset

[ABC212E] Safety Journey

[ABC212F] Greedy Takahashi

[ABC212G] Power Pair

[ABC212H] Nim Counting

[ABC223H] Xor Query

[ABC224A] Tires

[ABC224B] Mongeness

[ABC224C] Triangle?

[ABC224D] 8 Puzzle on Graph

[ABC224E] Integers on Grid

[ABC224F] Problem where +s Separate Digits

[ABC224G] Roll or Increment

[ABC224H] Security Camera 2

[ABC225A] Distinct Strings

[ABC225B] Star or Not

[ABC225C] Calendar Validator

[ABC225D] Play Train

[ABC225E] フ

[ABC225F] String Cards

[ABC225G] X

[ABC225H] Social Distance 2

[ABC226A] Round decimals

[ABC226B] Counting Arrays

[ABC226C] Martial artist

[ABC226D] Teleportation

[ABC226E] Just one

[ABC226F] Score of Permutations

[ABC226G] The baggage

[ABC226H] Random Kth Max

[ABC227A] Last Card

[ABC227B] KEYENCE building

[ABC227C] ABC conjecture

[ABC227D] Project Planning

[ABC227E] Swap

[ABC227F] Treasure Hunting

[ABC227G] Divisors of Binomial Coefficient

[ABC227H] Eat Them All

[ABC228A] On and Off

[ABC228B] Takahashi's Secret

[ABC228C] Final Day

[ABC228D] Linear Probing

[ABC228E] Integer Sequence Fair

[ABC228F] Stamp Game

[ABC228G] Digits on Grid

[ABC228H] Histogram

[ABC229A] First Grid

[ABC229B] Hard Calculation

[ABC229C] Cheese

[ABC229D] Longest X

[ABC229E] Graph Destruction

[ABC229F] Make Bipartite

[ABC229G] Longest Y

[ABC229H] Advance or Eat

[ABC230A] AtCoder Quiz 3

[ABC230B] Triple Metre

[ABC230C] X drawing

[ABC230D] Destroyer Takahashi

[ABC230E] Fraction Floor Sum

[ABC230F] Predilection

[ABC230G] GCD Permutation

[ABC230H] Bullion

[ABC231A] Water Pressure

[ABC231B] Election

[ABC231C] Counting 2

[ABC231D] Neighbors

[ABC231E] Minimal payments

[ABC231G] Balls in Boxes

[ABC231H] Minimum Coloring

[ABC231F] Jealous Two

[ABC232A] QQ solver

[ABC232B] Caesar Cipher

[ABC232C] Graph Isomorphism

[ABC232D] Weak Takahashi

[ABC232E] Rook Path

[ABC232F] Simple Operations on Sequence

[ABC232G] Modulo Shortest Path

[ABC232H] King's Tour

[ABC233A] 10yen Stamp

[ABC233C] Product

[ABC233D] Count Interval

[ABC233E] Σ[k=0..10^100]floor(X／10^k)

[ABC233Ex] Manhattan Christmas Tree

[ABC233F] Swap and Sort

[ABC233G] Strongest Takahashi

[ABC233B] A Reverse

[ABC234A] Weird Function

[ABC234B] Longest Segment

[ABC234C] Happy New Year!

[ABC234D] Prefix K-th Max

[ABC234E] Arithmetic Number

[ABC234Ex] Enumerate Pairs

[ABC234F] Reordering

[ABC234G] Divide a Sequence

[ABC235A] Rotate

[ABC235B] Climbing Takahashi

[ABC235C] The Kth Time Query

[ABC235D] Multiply and Rotate

[ABC235E] MST + 1

[ABC235F] Variety of Digits

[ABC235G] Gardens

[ABC235Ex] Painting Weighted Graph

[ABC236A] chukodai

[ABC236B] Who is missing?

c [ABC236C] Route Map

[ABC236D] Dance

[ABC236E] Average and Median

[ABC236F] Spices

[ABC236G] Good Vertices

[ABC236Ex] Distinct Multiples

[ABC237A] Not Overflow

[ABC237B] Matrix Transposition

[ABC237C] kasaka

[ABC237D] LR insertion

[ABC237E] Skiing

[ABC237Ex] Hakata

[ABC237F] |LIS| = 3

[ABC237G] Range Sort Query

[ABC238A] Exponential or Quadratic

[ABC238B] Pizza

[ABC238C] digitnum

[ABC238D] AND and SUM

[ABC238E] Range Sums

[ABC238F] Two Exams

[ABC238G] Cubic?

[ABC238Ex] Removing People

[ABC239A] Horizon

[ABC239A] Horizon

[ABC239B] Integer Division

[ABC239B] Integer Division

[ABC239C] Knight Fork

[ABC239A] Knight Fork

[ABC239D] Prime Sum Game

[ABC239D] Prime Sum Game

[ABC239E] Subtree K-th Max

[ABC239E] Subtree K-th Max

[ABC239Ex]Dice Product 2

[ABC239F] Construct Highway

[ABC239F] Construct Highway

[ABC239G] Builder Takahashi

[ABC239G]Builder Takahashi

Dice Product 2

[ABC240A] Edge Checker

[ABC240A] Edge Checker

[ABC240B] Count Distinct Integers

[ABC240B] Count Distinct Integers

[ABC240C] Jumping Takahashi

[ABC240C] Jumping Takahashi

[ABC240D] Strange Balls

[ABC240D] Strange Balls

[ABC240E] Ranges on Tree

[ABC240E] Ranges on Tree

[ABC240Ex] Sequence of Substrings

[ABC240F] Sum Sum Max

[ABC240F] Sum Sum Max

[ABC240F] Sum Sum Max

[ABC240G] Teleporting Takahashi

[ABC240G] Teleporting Takahashi

[ABC240Ex] Sequence of Substrings

[ABC241A] Digit Machine

[ABC241A] Digit Machine

[ABC241B] Pasta

[ABC241A] Digit Machine

[ABC241C] Connect 6

[ABC241D] Sequence Query

[ABC241D] Sequence Query

[ABC241E] Putting Candies

[ABC241E] Putting Candies

[ABC241Ex] Card Deck Score

[ABC241F] Skate

[ABC241F] Skate

[ABC241G] Round Robin

[ABC241G] Round Robin

[ABC241Ex] Card Deck Score

[ABC241C] Connect 6

[ABC242A] T-shirt

[ABC242B] Minimize Ordering

[ABC242C] 1111gal password

[ABC242D] ABC Transform

[ABC242E] ABC (∀x∀)

[ABC242Ex] Random Painting

[ABC242F] Black and White Rooks

[ABC242G] Range Pairing Query

[ABC243A] Shampoo

[ABC243B] Hit and Blow

[ABC243C] Collision 2

[ABC243D] Moves on Binary Tree

[ABC243E] Edge Deletion

[ABC243Ex] Builder Takahashi (Enhanced version)

[ABC243F] Lottery

[ABC243G] Sqrt

[ABC244A] Last Letter

[ABC244B] Go Straight and Turn Right

[ABC244C] Yamanote Line Game

[ABC244D] Swap Hats

[ABC244E] King Bombee

[ABC244Ex] Linear Maximization

[ABC244F] Shortest Good Path

[ABC244G] Construct Good Path

[ABC245A] Good morning

[ABC245B] Mex

[ABC245C] Choose Elements

[ABC245D] Polynomial division

[ABC245E] Wrapping Chocolate

[ABC245Ex] Product Modulo 2

[ABC245F] Endless Walk

[ABC245G] Foreign Friends

[ABC246A] Four Points

[ABC246B] Get Closer

[ABC246C] Coupon

[ABC246D] 2-variable Function

[ABC246E] Bishop 2

[ABC246Ex] 01? Queries

[ABC246F] typewriter

[ABC246G] Game on Tree 3

[ABC247A] Move Right

[ABC247B] Unique Nicknames

[ABC247C] 1 2 1 3 1 2 1

[ABC247D] Cylinder

[ABC247E] Max Min

[ABC247Ex] Rearranging Problem

[ABC247F] Cards

[ABC247G] Dream Team

[ABC248A] Lacked Number

[ABC248B] Slimes

[ABC248C] Dice Sum

[ABC248D] Range Count Query

[ABC248E] K-colinear Line

[ABC248Ex] Beautiful Subsequences

[ABC248F] Keep Connect

[ABC248G] GCD cost on the tree

[ABC249A] Jogging

[ABC249B] Perfect String

[ABC249C] Just K

[ABC249D] Index Trio

[ABC249E] RLE

[ABC249Ex] Dye Color

[ABC249F] Ignore Operations

[ABC249G] Xor Cards

[ABC250A] Adjacent Squares

[ABC250B] Enlarged Checker Board

[ABC250C] Adjacent Swaps

[ABC250D] 250-like Number

[ABC250E] Prefix Equality

[ABC250Ex] Trespassing Takahashi

[ABC250F] One Fourth

[ABC250G] Stonks

[ABC251A] Six Characters

[ABC251B] At Most 3 (Judge ver.)

[ABC251C] Poem Online Judge

[ABC251D] At Most 3 (Contestant ver.)

[ABC251E] Takahashi and Animals

[ABC251Ex] Fill Triangle

abc251_f Two Spanning Trees

[ABC251G] Intersection of Polygons

[ABC252A] ASCII code

[ABC252B] Takahashi's Failure

[ABC252C] Slot Strategy

[ABC252D] Distinct Trio

[ABC252E] Road Reduction

[ABC252Ex] K-th beautiful Necklace

[ABC252F] Bread

[ABC252G] Pre-Order

[ABC253A] Median?

[ABC253B] Distance Between Tokens

[ABC253C] Max - Min Query

[ABC253D] FizzBuzz Sum Hard

[ABC253E] Distance Sequence

[ABC253E]Distance Sequence

[ABC253F] Operations on a Matrix

[ABC253G] Swap Many Times

[ABC253Ex] We Love Forest

[ABC254A] Last Two Digits

[ABC254B] Practical Computing

[ABC254C] K Swap

[ABC254D] Together Square

[ABC254E] Small d and k

[ABC254Ex] Multiply or Divide by 2

[ABC254F] Rectangle GCD

[ABC254G] Elevators

[ABC255A] You should output ARC, though this is ABC.

[ABC255B] Light It Up

[ABC255C] ±1 Operation 1

[ABC255D] ±1 Operation 2

[ABC255E] Lucky Numbers

[ABC255F] Pre-order and In-order

[ABC255G] Constrained Nim

[ABC255Ex] Range Harvest Query

[ABC256A] 2^N

[ABC256B] Batters

[ABC256C] Filling 3x3 array

[ABC256D] Union of Interval

[ABC256E] Takahashi's Anguish

[ABC256Ex] I like Query Problem

[ABC256F] Cumulative Cumulative Cumulative Sum

[ABC256G] Black and White Stones

[ABC257A] A to Z String 2

[ABC257B] 1D Pawn

[ABC257C] Robot Takahashi

[ABC257D] Jumping Takahashi 2

[ABC257Ex] Dice Sum 2

[ABC257E] Addition and Multiplication 2

[ABC257F] Teleporter Setting

[ABC257G] Prefix Concatenation

[ABC258A] When?

[ABC258B] Number Box

[ABC258C] Rotation

[ABC258D] Trophy

[ABC258E] Packing Potatoes

[ABC258Ex] Odd Steps

[ABC258F] Main Street

[ABC258G] Triangle

[ABC259A] Growth Record

[ABC259B] Counterclockwise Rotation

[ABC259C] XX to XXX

[ABC259D] Circumferences

[ABC259Ex] Yet Another Path Counting

[ABC259E] LCM on Whiteboard

[ABC259F] Select Edges

[ABC259G] Grid Card Game

[ABC260A] A Unique Letter

[ABC260B] Better Students Are Needed!

[ABC260C] Changing Jewels

[ABC260D] Draw Your Cards

[ABC260Ex] Colorfulness

[ABC260E] At Least One

[ABC260F] Find 4-cycle

[ABC260G] Scalene Triangle Area

[ABC261A] Intersection

[ABC261B] Tournament Result

[ABC261C] NewFolder(1)

[ABC261D] Flipping and Bonus

[ABC261Ex] Game on Graph

[ABC261E] Many Operations

[ABC261F] Sorting Color Balls

[ABC261G] Replace

[ABC262A] World Cup

[ABC262B] Triangle (Easier)

[ABC262C] Min Max Pair

[ABC262D] I Hate Non-integer Number

[ABC262E] Red and Blue Graph

[ABC262Ex] Max Limited Sequence

[ABC262F] Erase and Rotate

[ABC262G] LIS with Stack

[ABC263A] Full House

[ABC263B] Ancestor

[ABC263C] Monotonically Increasing

[ABC263D] Left Right Operation

[ABC263E] Sugoroku 3

[ABC263F] Tournament

[ABC263G] Erasing Prime Pairs

[ABC263Ex] Intersection 2

[ABC264A] "atcoder".substr()

[ABC264B] Nice Grid

[ABC264C] Matrix Reducing

[ABC264D] "redocta".swap(i,i+1)

[ABC264E] Blackout 2

[ABC264Ex] Perfect Binary Tree

[ABC264F] Monochromatic Path

[ABC264G] String Fair

[ABC265A] Apple

[ABC265B] Explore

[ABC265C] Belt Conveyor

[ABC265D] Iroha and Haiku (New ABC Edition)

[ABC265Ex] No-capture Lance Game

[ABC265E] Warp

[ABC265F] Manhattan Cafe

[ABC265G] 012 Inversion

[ABC266A] Middle Letter

[ABC266B] Modulo Number

[ABC266C] Convex Quadrilateral

[ABC266D] Snuke Panic (1D)

[ABC266E] Throwing the Die

[ABC266Ex] Snuke Panic (2D)

[ABC266F] Well-defined Path Queries on a Namori

[ABC266G] Yet Another RGB Sequence

[ABC267A] Saturday

[ABC267B] Split?

[ABC267C] Index × A(Continuous ver.)

[ABC267C] Index × A(Continuous ver.)

[ABC267D] Index × A(Not Continuous ver.)

[ABC267D] Index × A(Not Continuous ver.)

[ABC267E] Erasing Vertices 2

[ABC267Ex] Odd Sum

[ABC267F] Exactly K Steps

[ABC267G] Increasing K Times

[ABC268A] Five Integers

[ABC268B] Prefix?

[ABC268C] Chinese Restaurant

[ABC268D] Unique Username

[ABC268E] Chinese Restaurant (Three-Star Version)

[ABC268Ex] Taboo

[ABC268F] Best Concatenation

[ABC268G] Random Student ID

[ABC269A] Anyway Takahashi

[ABC269B] Rectangle Detection

[ABC269C] Submask

[ABC269D] Do use hexagon grid

[ABC269D]Do use hexagon grid

[ABC269Ex] Antichain

[ABC260E] At Least One

Numbered Checker

[ABC269G] Reversible Cards 2

[ABC270A] 1-2-4 Test

[ABC270B] Hammer

[ABC270C] Simple path

[ABC270D] Stones

[ABC270Ex] add 1

[ABC270E] Apple Baskets on Circle

[ABC270F] Transportation

[ABC270G] Sequence in mod P

[ABC271A] 484558

[ABC271B] Maintain Multiple Sequences

[ABC271C] Manga

[ABC271D] Flip and Adjust

[ABC271E] Subsequence Path

[ABC271Ex] General General

[ABC271F] XOR on Grid Path

[ABC271G] Access Counter

[ABC272A] Integer Sum

[ABC272B] Everyone is Friends

[ABC272C] Max Even

[ABC272D] Root M Leaper

[ABC272E] Add and Mex

[ABC272Ex] Flipping Coins 2

[ABC272F] Two Strings

[ABC272G] Yet Another mod M

[ABC273A] A Recursive Function

[ABC273B] Broken Rounding

[ABC273C] (K+1)-th Largest Number

[ABC273D] LRUD Instructions

[ABC273E] Notebook

[ABC273Ex] Inv(0,1)ving Insert(1,0)n

[ABC273F] Hammer 2

[ABC273G] Row Column Sums 2

[ABC274A] Batting Average

[ABC274B] Line Sensor

[ABC274C] Ameba

[ABC274D] Robot Arms 2

[ABC274E] Booster

[ABC274Ex] XOR Sum of Arrays

[ABC274F] Fishing

[ABC274G] Security Camera 3

[ABC275A] Find Takahashi

[ABC275B] ABC-DEF

[ABC275C] Counting Squares

[ABC275D] Yet Another Recursive Function

[ABC275E] Sugoroku 4

[ABC275Ex] Monster

[ABC275F] Erase Subarrays

[ABC275G] Infinite Knapsack

[ABC276A] Rightmost

[ABC276B] Adjacency List

[ABC276C] Previous Permutation

[ABC276D] Divide by 2 or 3

[ABC276Ex] Construct a Matrix

[ABC276E] Round Trip

[ABC276F] Double Chance

[ABC276G] Count Sequences

A - ^{-1}

B - Playing Cards Validation

[ABC277C] Ladder Takahashi

[ABC277D] Takahashi's Solitaire

[ABC277E] Crystal Switches

[ABC277Ex]Constrained Sums

[ABC277F] Sorting a Matrix

[ABC277G] Random Walk to Millionaire

A - Shift

B - Misjudge the Time

C - FF

D - All Assign Point Add

E - Grid Filling

Ex - make 1

F - Shiritori

G - Generalized Subtraction Game

[ABC279A] wwwvvvvvv

[ABC279B] LOOKUP

[ABC279C] RANDOM

[ABC279D] Freefall

[ABC279Ex] Sum of Prod of Min

[ABC279E] Cheating Amidakuji

[ABC279F] BOX

[ABC279G] At Most 2 Colors

[ABC280A] Pawn on a Grid

[ABC280B] Inverse Prefix Sum

[ABC280C] Extra Character

[ABC280D] Factorial and Multiple

[ABC280E] Critical Hit

[ABC280Ex] Substring Sort

[ABC280F] Pay or Receive

[ABC280G] Do Use Hexagon Grid 2

[ABC281A] Count Down

[ABC281B] Sandwich Number

[ABC281C] Circular Playlist

[ABC281D] Max Multiple

[ABC281E] Least Elements

[ABC281Ex] Alchemy

[ABC281F] Xor Minimization

[ABC281G] Farthest City

[ABC282A] Generalized ABC

[ABC282B] Let's Get a Perfect Score

[ABC282C] String Delimiter

[ABC282D] Make Bipartite 2

[ABC282E] Choose Two and Eat One

[ABC282Ex] Min + Sum

[ABC282F] Union of Two Sets

[ABC282G] Similar Permutation

[ABC283A] Power

[ABC283B] First Query Problem

[ABC283C] Cash Register

[ABC283C] Cash Register

[ABC283D] Scope

[ABC283Ex] Popcount Sum

[ABC283E] Don‘t Isolate Elements

[ABC283F] Permutation Distance

[ABC283G] Partial Xor Enumeration

[ABC284A] Sequence of Strings

[ABC284B] Multi Test Cases

[ABC284C] Count Connected Components

[ABC284D] Happy New Year 2023

[ABC284E] Count Simple Paths

[ABC284Ex] Count Unlabeled Graphs

[ABC284F] ABCBAC

[ABC284G] Only Once

[ABC285A] Edge Checker 2

[ABC285B] Longest Uncommon Prefix

[ABC285C] abc285_brutmhyhiizp

[ABC285D] Change Usernames

[ABC285E] Work or Rest

[ABC285Ex] Avoid Square Number

[ABC285F] Substring of Sorted String

[ABC285G] Tatami

[ABC286A] Range Swap

[ABC286B] Cat

[ABC286C] Rotate and Palindrome

[ABC286E] Souvenir

[ABC286Ex] Don't Swim

[ABC286F] Guess The Number 2

[ABC286G] Unique Walk

[ABC286D] Money in Hand

[ABC287A] Majority

[ABC287B] Postal Card

[ABC287C] Path Graph?

[ABC287D] Match or Not

[ABC287E] Karuta

[ABC287Ex] Directed Graph and Query

[ABC287F] Components

[ABC287G] Balance Update Query

[ABC288A] Many A+B Problems

[ABC288B] Qualification Contest

[ABC288C] Don’t be cycle

[ABC288D] Range Add Query

[ABC288E] Wish List

[ABC288F] Integer Division

[ABC288Ex] A Nameless Counting Problem

[ABC288G] 3^N Minesweeper

[ABC289A] flip

[ABC289B] レ

[ABC289C] Coverage

[ABC289D] Step Up Robot

[ABC289E] Swap Places

[ABC289Ex] Trio

[ABC289F] Teleporter Takahashi

[ABC289G] Shopping in AtCoder store

[ABC290A] Contest Result

[ABC290B] Qual B

[ABC290C] Max MEX

[ABC290D] Marking

[ABC290E] Make it Palindrome

[ABC290F] Maximum Diameter

[ABC290G] Edge Elimination

[ABC290Ex] Bow Meow Optimization

[ABC291A] camel Case

[ABC291B] Trimmed Mean

[ABC291C] LRUD Instructions 2

[ABC291D] Flip Cards

[ABC291E] Find Permutation

[ABC291F] Teleporter and Closed off

[ABC291G] OR Sum

[ABC291Ex] Balanced Tree

[ABC292A] CAPS LOCK

[ABC292B] Yellow and Red Card

[ABC292C] Four Variables

[ABC292D] Unicyclic Components

[ABC292E] Transitivity

[ABC292F] Regular Triangle Inside a Rectangle

[ABC292G] Count Strictly Increasing Sequences

[ABC292Ex] Rating Estimator

[ABC293A] Swap Odd and Even

[ABC293B] Call the ID Number

[ABC293C] Make Takahashi Happy

[ABC293D] Tying Rope

[ABC293E] Geometric Progression

[ABC293Ex] Optimal Path Decomposition

[ABC293F] Zero or One

[ABC293G] Triple Index

[ABC294A] Filter

[ABC294B] ASCII Art

[ABC294C] Merge Sequences

[ABC294D] Bank

[ABC294E] 2xN Grid

[ABC294F] Sugar Water 2

[ABC294G] Distance Queries on a Tree

[ABC294Ex] K-Coloring

[ABC295A] Probably English

[ABC295B] Bombs

[ABC295C] Socks

[ABC295D] Three Days Ago

[ABC295E] Kth Number

[ABC295Ex] E or m

[ABC295F] substr = S

[ABC295G] Minimum Reachable City

[ABC296A] Alternately

[ABC296B] Chessboard

[ABC296C] Gap Existence

[ABC296D] M<=ab

[ABC296E] Transition Game

[ABC296F] Simultaneous Swap

[ABC296G] Polygon and Points

[ABC296Ex] Unite

[ABC297A] Double Click

[ABC297B] chess960

[ABC297C] PC on the Table

[ABC297D] Count Subtractions

[ABC297E] Kth Takoyaki Set

[ABC297F] Minimum Bounding Box 2

[ABC297G] Constrained Nim 2

[ABC297Ex] Diff Adjacent

[ABC298A] Job Interview

[ABC298B] Coloring Matrix

[ABC298C] Cards Query Problem

[ABC298D] Writing a Numeral

[ABC298E] Unfair Sugoroku

[ABC298Ex] Sum of Min of Length

[ABC298F] Rook Score

[ABC298G] Strawberry War

[ABC299A] Treasure Chest

[ABC299B] Trick Taking

[ABC299C] Dango

[ABC299D] Find by Query

[ABC299E] Nearest Black Vertex

[ABC299F] Square Subsequence

[ABC299G] Minimum Permutation

[ABC299Ex] Dice Sum Infinity

[ABC300A] N-choice question

[ABC300B] Same Map in the RPG World

[ABC300C] Cross

[ABC300D] AABCC

[ABC300E] Dice Product 3

[ABC300Ex] Fibonacci: Revisited

[ABC300F] More Holidays

[ABC300G] P-smooth number

[ABC301A] Overall Winner

[ABC301B] Fill the Gaps

[ABC301C] AtCoder Cards

[ABC301D] Bitmask

[ABC301E] Pac-Takahashi

[ABC301Ex] Difference of Distance

[ABC301F] Anti-DDoS

[ABC301G] Worst Picture

[ABC302A] Attack

[ABC302B] Find snuke

[ABC302C] Almost Equal

[ABC302D] Impartial Gift

[ABC302E] Isolation

[ABC302F] Merge Set

[ABC302G] Sort from 1 to 4

[ABC302Ex] Ball Collector

[ABC303A] Similar String

[ABC303B] Discord

[ABC303C] Dash

[ABC303D] Shift vs. CapsLock

[ABC303E] A Gift From the Stars

[ABC303F] Damage over Time

[ABC303G] Bags Game

[ABC303Ex] Constrained Tree Degree

[ABC304A] First Player

[ABC304B] Subscribers

[ABC304C] Virus

[ABC304D] A Piece of Cake

[ABC304E] Good Graph

[ABC304Ex] Constrained Topological Sort

[ABC304F] Shift Table

[ABC304G] Max of Medians

[ABC305A] Water Station

[ABC305B] ABCDEFG

[ABC305C] Snuke the Cookie Picker

[ABC305D] Sleep Log

[ABC305E] Art Gallery on Graph

[ABC305Ex] Shojin

[ABC305F] Dungeon Explore

[ABC305G] Banned Substrings

[ABC306A] Echo

[ABC306B] Base 2

[ABC306C] Centers

[ABC306D] Poisonous Full-Course

[ABC306E] Best Performances

[ABC306F] Merge Sets

[ABC306G] Return to 1

[ABC306Ex] Balance Scale

[ABC307A] Weekly Records

[ABC307B] racecar

[ABC307C] Ideal Sheet

[ABC307D] Mismatched Parentheses

[ABC307E] Distinct Adjacent

[ABC307Ex] Marquee

[ABC307F] Virus 2

[ABC307G] Approximate Equalization

[ABC308A] New Scheme

[ABC308B] Default Price

[ABC308C] Standings

[ABC308D] Snuke Maze

[ABC308E] MEX

[ABC308Ex] Make Q

[ABC308F] Vouchers

[ABC308G] Minimum Xor Pair Query

[ABC309A] Nine

[ABC309B] Rotate

[ABC309C] Medicine

[ABC309D] Add One Edge

ABC309E] Family and Insurance

[ABC309Ex] Simple Path Counting Problem

[ABC309F] Box in Box

[ABC309G] Ban Permutation

[ABC310A] Order Something Else

[ABC310B] Strictly Superior

[ABC310C] Reversible

[ABC310D] Peaceful Teams

[ABC310E] NAND repeatedly

[ABC310Ex] Negative Cost

[ABC310F] Make 10 Again

[ABC310G] Takahashi And Pass-The-Ball Game

[ABC311A] First ABC

[ABC311B] Vacation Together

[ABC311C] Find it!

[ABC311D] Grid Ice Floor

[ABC311E] Defect-free Squares

[ABC311F] Yet Another Grid Task

[ABC311G] One More Grid Task

[ABC311Ex] Many Illumination Plans

[ABC312A] Chord

[ABC312B] TaK Code

[ABC312C] Invisible Hand

[ABC312D] Count Bracket Sequences

[ABC312E] Tangency of Cuboids

[ABC312F] Cans and Openers

[ABC312G] Avoid Straight Line

[ABC312Ex] snukesnuke

[ABC313A] To Be Saikyo

[ABC313B] Who is Saikyo?

[ABC313C] Approximate Equalization 2

[ABC313D] Odd or Even

[ABC313E] Duplicate

[ABC313F] Flip Machines

[ABC313G] Redistribution of Piles

[ABC313Ex] Group Photo

[ABC314A] 3.14

[ABC314B] Roulette

[ABC314C] Rotate Colored Subsequence

[ABC314D] LOWER

[ABC314E] Roulettes

[ABC314F] A Certain Game

[ABC314G] Amulets

[ABC314Ex] Disk and Segments

[ABC315A] tcdr

[ABC315B] The Middle Day

[ABC315C] Flavors

[ABC315D] Magical Cookies

[ABC315E] Prerequisites

[ABC315Ex] Typical Convolution Problem

[ABC315F] Shortcuts

[ABC315G] Ai + Bj + Ck = X (1 <= i, j, k <= N)

[ABC318A] Full Moon

[ABC318B] Overlapping sheets

[ABC318C] Blue Spring

[ABC318D] General Weighted Max Matching

[ABC318E] Sandwiches

[ABC318F] Octopus

[ABC318G] Typical Path Problem

[ABC318Ex] Count Strong Test Cases

[ABC319A] Legendary Players

[ABC319B] Measure

[ABC319C] False Hope

[ABC319D] Minimum Width

[ABC319E] Bus Stops

[ABC319F] Fighter Takahashi

[ABC319G] Counting Shortest Paths

[ABC320A] Leyland Number

[ABC320B] Longest Palindrome

[ABC320C] Slot Strategy 2 (Easy)

[ABC320D] Relative Position

[ABC320E] Somen Nagashi

[ABC320F] Fuel Round Trip

[ABC320G] Slot Strategy 2 (Hard)

[ABC321A] 321-like Checker

[ABC321B] Cutoff

[ABC321C] 321-like Searcher

[ABC321D] Set Menu

[ABC321E] Complete Binary Tree

[ABC321F] #(subset sum = K) with Add and Erase

[ABC321G] Electric Circuit

[ABC322A] First ABC 2

[ABC322B] Prefix and Suffix

[ABC322C] Festival

[ABC322D] Polyomino

[ABC322E] Product Development

[ABC322F] Vacation Query

[ABC322G] Two Kinds of Base

[ABC323A] Weak Beats

[ABC323B] Round-Robin Tournament

[ABC323C] World Tour Finals

[ABC323D] Merge Slimes

[ABC323E] Playlist

[ABC323F] Push and Carry

[ABC323G] Inversion of Tree

A - Same

B - 3-smooth Numbers

C - Error Correction

D - Square Permutation

E- Joint Two Strings

F - Beautiful Path

G - Generate Arrays

[ABC325A] Takahashi san

[ABC325B] World Meeting

[ABC325C] Sensors

[ABC325D] Printing Machine

[ABC325E] Our clients, please wait a moment

[ABC325F] Sensor Optimization Dilemma

[ABC325G] offence

[ABC326A] 2UP3DOWN

[ABC326B] 326-like Numbers

[ABC326C] Peak

[ABC326D] ABC Puzzle

[ABC326E] Revenge of "The Salary of AtCoder Inc."

[ABC326F] Robot Rotation

[ABC326G] Unlock Achievement

[ABC327A] ab
[ABC327B] A^A

[ABC327C] Number Place

[ABC327D] Good Tuple Problem

[ABC327E] Maximize Rating

[ABC327F] Apples

[ABC327G] Many Good Tuple Problems

[ABC328A] Not Too Hard

[ABC328B] 11/11

[ABC328C] Consecutive

[ABC328D] Take ABC

[ABC328E] Modulo MST

[ABC328F] Good Set Query

[ABC328G] Cut and Reorder

[ABC329A] Spread

[ABC329B] Next

c [ABC329C] Count xxx

[ABC329D] Election Quick Report

[ABC329E] Stamp

[ABC329F] Colored Ball

[ABC329G] Delivery on Tree

[ABC330A] Counting Passes

[ABC330B] Minimize Abs 1

[ABC330C] Minimize Abs 2

[ABC330D] Counting Ls

[ABC330E] Mex and Update

[ABC330F] Minimize Bounding Square

[ABC330G] Inversion Squared

[ABC331A] Tomorrow

[ABC331B] Buy One Carton of Milk

[ABC331C] Sum of Numbers Greater Than Me

[ABC331D] Tile Pattern

[ABC331E] Set Meal

[ABC331F] Palindrome Query

[ABC331G] Collect Them All

[ABC332A] Online Shopping

[ABC332B] Glass and Mug

[ABC332C] T-shirts

[ABC332D] Swapping Puzzle

[ABC332E] Lucky bag

[ABC332F] Random Update Query

[ABC332G] Not Too Many Balls

[ABC333A] Three Threes

[ABC333B] Pentagon

[ABC333C] Repunit Trio

[ABC333D] Erase Leaves

[ABC333E] Takahashi Quest

[ABC333F] Bomb Game 2

[ABC333G] Nearest Fraction

[ABC334A] Christmas Present

[ABC334B] Christmas Trees

[ABC334C] Socks 2

[ABC334D] Reindeer and Sleigh

[ABC334E] Christmas Color Grid 1

[ABC334F] Christmas Present 2

[ABC334G] Christmas Color Grid 2

[ABC335A] 202<s>3</s>

[ABC335B] Tetrahedral Number

[ABC335D] Loong and Takahashi

[ABC335E] Non-Decreasing Colorful Path

[ABC335F] Hop Sugoroku

[ABC335G] Discrete Logarithm Problems

[ABC336A] Long Loong

[ABC336B] CTZ

[ABC336C] Even Digits

[ABC336D] Pyramid

[ABC336E] Digit Sum Divisible

[ABC336F] Rotation Puzzle

[ABC336G] 16 Integers

[ABC337A] Scoreboard

[ABC337B] Extended ABC

[ABC337C] Lining Up 2

[ABC337D] Cheating Gomoku Narabe

[ABC337E] Bad Juice

[ABC337F] Usual Color Ball Problems

[ABC337G] Tree Inversion

[ABC338A] Capitalized?

[ABC338B] Frequency

[ABC338C] Leftover Recipes

[ABC338D] Island Tour

[ABC338E] Chords

[ABC338F] Negative Traveling Salesman

[ABC338G] evall

[ABC339A] TLD

[ABC339B] Langton‘s Takahashi

[ABC339C] Perfect Bus

[ABC339D] Synchronized Players

[ABC339F] Product Equality

[ABC339G] Smaller Sum

[ABC340A] Arithmetic Progression

[ABC340B] Append

[ABC340C] Divide and Divide

[ABC340D] Super Takahashi Bros.

[ABC340E] Mancala 2

[ABC340F] S = 1

[ABC340G] Leaf Color

[ABC341A] Print 341

[ABC341B] Foreign Exchange

[ABC341C] Takahashi Gets Lost

[ABC341D] Only one of two

[ABC341E] Alternating String

[ABC341F] Breakdown

[ABC341G] Highest Ratio

[ABC342A] Yay!

[ABC342B] Which is ahead?

[ABC342C] Many Replacement

[ABC342D] Square Pair

[ABC342E] Last Train

[ABC342F] Black Jack

[ABC342G] Retroactive Range Chmax

[ABC343A] Wrong Answer

[ABC343B] Adjacency Matrix

[ABC343C] 343

[ABC343D] Diversity of Scores

[ABC343E] 7x7x7

[ABC343F] Second Largest Query

[ABC343G] Compress Strings

[ABC344A] Spoiler

[ABC344B] Delimiter

[ABC344C] A+B+C

[ABC344D] String Bags

[ABC344E] Insert or Erase

[ABC344F] Earn to Advance

[ABC344G] Points and Comparison

[ABC345A] Leftrightarrow

[ABC345B] Integer Division Returns

[ABC345C] One Time Swap

[ABC345D] Tiling

[ABC345E] Colorful Subsequence

[ABC345F] Many Lamps

[ABC345G] Sugoroku 5

[ABC346A] Adjacent Product

[ABC346B] Piano

[ABC346C] Σ

[ABC346D] Gomamayo Sequence

[ABC346E] Paint

[ABC346F] SSttrriinngg in StringString

[ABC346G] Alone

[ABC346G] Alone

[ABC347B] Substring

[ABC347C] Ideal Holidays

[ABC347D] Popcount and XOR

[ABC347E] Set Add Query

[ABC347F] Non-overlapping Squares

[ABC347G] Grid Coloring 2

[ABC348A] Penalty Kick

[ABC348B] Farthest Point

[ABC348C] Colorful Beans

[ABC348D] Medicines on Grid

[ABC348E] Minimize Sum of Distances

[ABC348F] Oddly Similar

[ABC348G] Max (Sum - Max)

[ABC349A] Zero Sum Game

[ABC349B] Commencement

[ABC349C] Airport Code

[ABC349D] Divide Interval

[ABC349E] Weighted Tic-Tac-Toe

[ABC349F] Subsequence LCM

[ABC349G] Palindrome Construction

[ABC350A] Past ABCs

[ABC350B] Dentist Aoki

[ABC350C] Sort

[ABC350D] New Friends

[ABC350E] Toward 0

[ABC350F] Transpose

[ABC350G] Mediator

[ABC351A] The bottom of the ninth

[ABC351B] Spot the Difference

[ABC351C] Merge the balls

[ABC351D] Grid and Magnet

[ABC351E] Jump Distance Sum

[ABC351F] Double Sum

[ABC351G] Hash on Tree

[ABC352A] AtCoder Line

[ABC352B] Typing

[ABC352C] Standing On The Shoulders

[ABC352D] Permutation Subsequence

[ABC352E] Clique Connect

[ABC352F] Estimate Order

[ABC352G] Socks 3

[ABC353A] Buildings

[ABC353B] AtCoder Amusement Park

[ABC353C] Sigma Problem

[ABC353F] Tile Distance

[ABC353G] Merchant Takahashi

[ABC353D] Another Sigma Problem

[ABC353E] Yet Another Sigma Problem

[ABC354A] Exponential Plant

[ABC354B] AtCoder Janken 2

[ABC354C] AtCoder Magics

[ABC354D] AtCoder Wallpaper

[ABC354E] Remove Pairs

[ABC354F] Useless for LIS

[ABC354G] Select Strings

[ABC355A] Who Ate the Cake?

[ABC355B] Piano 2

[ABC355C] Bingo 2

[ABC355D] Intersecting Intervals

[ABC355E] Guess the Sum

[ABC355F] MST Query

[ABC355G] Baseball

[ABC356A] Subsegment Reverse

[ABC356B] Nutrients

[ABC356C] Keys

[ABC356D] Masked Popcount

[ABC356E] Max/Min

[ABC356F] Distance Component Size Query

[ABC356G] Freestyle

[ABC357A] Sanitize Hands

[ABC357C] Sierpinski carpet

[ABC357D] 88888888

[ABC357E] Reachability in Functional Graph

[ABC357F] Two Sequence Queries

[ABC357B] Uppercase and Lowercase

[ABC357G] Stair-like Grid

[ABC358A] Welcome to AtCoder Land

[ABC358B] Ticket Counter

[ABC358C] Popcorn

[ABC358D] Souvenirs

[ABC358E] Alphabet Tiles

[ABC358F] Easiest Maze

[ABC358G] AtCoder Tour

[ABC359A] Count Takahashi

[ABC359B] Couples

[ABC359C] Tile Distance 2

[ABC359D] Avoid K Palindrome

[ABC359E] Water Tank

[ABC359F] Tree Degree Optimization

[ABC359G] Sum of Tree Distance

[ABC360A] A Healthy Breakfast

[ABC360B] Vertical Reading

[ABC360C] Move It

[ABC360D] Ghost Ants

[ABC360E] Random Swaps of Balls

[ABC360F] InterSections

[ABC360G] Suitable Edit for LIS

[ABC361A] Insert

[ABC361B] Intersection of Cuboids

[ABC361C] Make Them Narrow

[ABC361D] Go Stone Puzzle

[ABC361E] Tree and Hamilton Path 2

[ABC361F] x = a^b

[ABC361G] Go Territory

[ABC362A] Buy a Pen

[ABC362B] Right Triangle

[ABC362C] Sum = 0

[ABC362D] Shortest Path 3

[ABC362E] Count Arithmetic Subsequences

[ABC362F] Perfect Matching on a Tree

[ABC362G] Count Substring Query

[ABC363A] Piling Up

[ABC363B] Japanese Cursed Doll

[ABC363C] Avoid K Palindrome 2

[ABC363D] Palindromic Number

[ABC363E] Sinking Land

[ABC363F] Palindromic Expression

[ABC363G] Dynamic Scheduling

[ABC364A] Glutton Takahashi

[ABC364B] Grid Walk

[ABC364C] Minimum Glutton

[ABC364D] K-th Nearest

[ABC364D] K-th Nearest

[ABC364E] Maximum Glutton

[ABC364F] Range Connect MST

[ABC364G] Last Major City

[ABC365A] Leap Year

[ABC365B] Second Best

[ABC365C] Transportation Expenses

[ABC365D] AtCoder Janken 3

[ABC365E] Xor Sigma Problem

[ABC365F] Takahashi on Grid

[ABC365G] AtCoder Office

[ABC366A] Election 2

[ABC366B] Vertical Writing

[ABC366C] Balls and Bag Query

[ABC366D] Cuboid Sum Query

[ABC366E] Manhattan Multifocal Ellipse

[ABC366E] Manhattan Multifocal Ellipse

[ABC366F] Maximum Composition

[ABC366G] XOR Neighbors

[ABC367A] Shout Everyday

[ABC367B] Cut .0

[ABC367C] Enumerate Sequences

[ABC367D] Pedometer

[ABC367E] Permute K times

[ABC367F] Rearrange Query

[ABC367G] Sum of (XOR^K or 0)

[ABC368A] Cut

[ABC368B] Decrease 2 max elements

[ABC368C] Triple Attack

[ABC368D] Minimum Steiner Tree

[ABC368E] Train Delay

[ABC368F] Dividing Game

[ABC368G] Add and Multiply Queries

[ABC369A] 369

[ABC369B] Piano 3

[ABC369C] Count Arithmetic Subarrays

[ABC369D] Bonus EXP

[ABC369E] Sightseeing Tour

[ABC369F] Gather Coins

[ABC369G] As far as possible

[ABC370A] Raise Both Hands

A-Raise Both Hands

[ABC370B] Binary Alchemy

B - Binary Alchemy

[ABC370C] Word Ladder

C - Word Ladder

[ABC370D] Cross Explosion

D - Cross Explosion

[ABC370E] Avoid K Partition

E - Avoid K Partition

[ABC370F] Cake Division

F - Cake Division

[ABC370G] Divisible by 3

G - Cake Division

[ABC371A] Jiro

[ABC371B] Taro

[ABC371C] Make Isomorphic

[ABC371D] 1D Country

[ABC371E] I Hate Sigma Problems

[ABC371F] Takahashi in Narrow Road

[ABC371G] Lexicographically Smallest Permutation

[ABC372A] delete .

[ABC372B] 3^A

[ABC372C] Count ABC Again

[ABC372D] Buildings

[ABC372E] K-th Largest Connected Components

[ABC372F] Teleporting Takahashi 2

[ABC372G] Ax + By < C

[ABC373A] September

[ABC373B] 1D Keyboard

[ABC373C] Max Ai+Bj

[ABC373D] Hidden Weights

[ABC373E] How to Win the Election

[ABC373F] Knapsack with Diminishing Values

[ABC373G] No Cross Matching

[ABC374A] Takahashi san 2

[ABC374B] Unvarnished Report

[ABC374C] Separated Lunch

[ABC374D] Laser Marking

[ABC374E] Sensor Optimization Dilemma 2

[ABC374F] Shipping

[ABC374G] Only One Product Name

[ABC375A] Seats

[ABC375B] Traveling Takahashi Problem

[ABC375C] Spiral Rotation

[ABC375D] ABA

[ABC375E] 3 Team Division

[ABC375F] Road Blocked

[ABC375G] Road Blocked 2

[ABC376A] Candy Button

[ABC376B] Hands on Ring (Easy)

[ABC376C] Prepare Another Box

[ABC376D] Cycle

[ABC376E] Max × Sum

[ABC376F] Hands on Ring (Hard)

[ABC376G] Treasure Hunting

[ABC377A] Rearranging ABC

[ABC377F] Avoid Queen Attack

[ABC377G] Edit to Match

[ABC377B] Avoid Rook Attack

[ABC377C] Avoid Knight Attack

[ABC377D] Many Segments 2

[ABC377E] Permute K times 2

1479：【例题1】Keywords Search

1480：玄武密码

1481：Censoring

单词

最短母串

1484：病毒

1485：文本生成器

AT_arc060_D 桁和

[ARC072F] Dam

Maximize GCD

[ARC130B] Colorful Lines

[ARC174A] A Multiply

AT_dp_a Frog 1

AT_dp_b Frog 2

AT_dp_d Knapsack 1

AT_dp_e Knapsack 2

AT_dp_f LCS

Longest Path

Grid 1

AT_dp_i Coins

AT_dp_j Sushi

AT_dp_k Stones

AT_dp_l Deque

hantina 个人中心用户设置练习情况我的题库我的专栏收藏夹我的工单锁定登出 AT_dp_m Candies

AT_dp_n Slimes

AT_dp_o Matching

AT_dp_p Independent Set

AT_dp_q Flowers

AT_dp_r Walk

AT_dp_s Digit Sum

AT_dp_t Permutation

AT_dp_u Grouping

AT_dp_v Subtree

AT_dp_w Intervals

AT_dp_x Tower

AT_dp_y Grid 2

AT_dp_z Frog 3

hantina 个人中心用户设置练习情况我的题库我的专栏收藏夹我的工单锁定登出 AT_dp_c Vacation

第K短路

八数码

数字组合

自然数拆分自然数拆分Lunatic版

陪审团 Jury Compromise

硬币 Coins

天才ACM Genius ACM

可达性统计

程序自动分析

银河英雄传说

食物链

超市 Supermarket

奇偶游戏 Parity Game

1663：【例 1】取石子游戏 1

1664：【例 2】取石子游戏 2

1665：【例 3】移棋子游戏

1666：取石子游戏

1667：巧克力棒

1668：取石子

1669：S-Nim

1670：取石子游戏

宝藏

计算重复

观光奶牛 Sightseeing Cows

区间 Interval（西瓜种植）

1509：【例 1】Intervals

1510：【例 2】出纳员问题

1511：【SCOI2011】糖果

1512：排队布局

数字游戏 (Number Games)

公交换乘 (Bus Transfer)

纪念品 (Souvenir)

零件加工 (Parts Processing)

优秀的拆分 (Excellent Split)

直播获奖 (Live Awards Ceremony)

表达式 (Expression)

方格取数 (Grid Numbers Picking)

分糖果

插入排序

网络连接

小熊的果篮 (Bear's Fruit Basket)

乘方(pow)

解密(decode)

逻辑表达式(expr)

上升点列(point)

小苹果（apple）

公路（road）

一元二次方程（uqe）

旅游巴士（bus）

[CSP-J 2024] 扑克牌

[CSP-J 2024] 地图探险

[CSP-J 2024] 小木棍

[CSP-J 2024] 接龙

[CSP-J 2025] 拼数 / number（官方数据）

[CSP-J 2025] 座位 / seat（官方数据）

[CSP-J 2025] 异或和 / xor（官方数据）

[CSP-J 2025] 多边形 / polygon（官方数据）

格雷码 (Gray Code)

括号树 (Bracket Tree)

树上的数 (Numbers on the Tree)

Emiya 家今天的饭

划分

树的重心

儒略日 (Julian Day)

动物园

函数调用

贪吃蛇 (Greedy Snake)

廊桥分配

括号序列

回文 (Palindrome)

交通规划

假期计划 (holiday)

策略游戏 (game)

星战 (galaxy)

数据传输 (transmit)

密码锁（lock）

消消乐（game）

结构体（struct）

种树（tree）

[CSP-S 2024] 决斗

[CSP-S 2024] 超速检测

[CSP-S 2024] 染色

[CSP-S 2024] 擂台游戏

[CSP-S 2025] 社团招新 / club（官方数据）

[CSP-S 2025] 道路修复 / road（官方数据）

[CSP-S 2025] 谐音替换 / replace（官方数据）

[CSP-S 2025] 员工招聘 / employ（官方数据）

围栏 Fence

裁剪序列 Cut the Sequence

1597：【例 1】滑动窗口

1598：【例 2】最大连续和

1599：【例 3】修剪草坪

1600：【例 4】旅行问题

1601：【例 5】Banknotes

1602：烽火传递

1603：绿色通道

1604：理想的正方形

1605：股票交易

【基础】相似数

树

加成序列 Addition Chains

送礼物

递归实现指数型枚举

递归实现组合型枚举

递归实现排列型枚举

奇怪的汉诺塔 Strange Towers of Hanoi

约数之和 Sumdiv

分形之城 Fractal Streets

费解的开关

「一本通 5.5 例 1」滑动窗口

【基础】小X与队列

【入门】双向队列

超级素数

周末舞会

Blah数集

围圈报数

魔法师与扑克牌游戏

魔法师与扑克牌游戏

小组队列 Team Queue

蚯蚓

双端队列

最大子序和

动态中位数

超市

序列 Sequence

数据备份

合并果子

查找最接近的元素

二分法求函数的零点

机器任务 Machine Schedule

泥泞的区域 Muddy Fields

骑士放置

捉迷藏

棋盘覆盖

棋盘覆盖

导弹防御塔

蚂蚁 Ants

1 [JOI 2022 Final]自学 / Self Study

最佳牛围栏 Best Cow Fence

特殊排序 Innovative Business

【例题1】愤怒的牛

1434：【例题2】Best Cow Fences

1435：【例题3】曲线

1436：数列分段II

1437：扩散

1438：灯泡

1439：【SCOI2010】传送带

矩阵加法

矩阵乘法

矩阵转置

图像旋转

图像模糊处理

计算矩阵边缘元素之和

矩阵交换行

同行列对角线的格

计算鞍点

算法提高铺地毯

【入门】求各个科目成绩的平均分

【基础】马鞍数

【NOIP2014 基础】螺旋矩阵

【NOIP2015 基础】扫雷游戏（mine）

蒲公英

磁力块

小Z的袜子

练18.2 苹果和虫子

练19.2 三个数

练20.4 判断点在第几象限

练21.4 体质指数BMI

【入门】行李托运费

【入门】能否构成直角三角形

【入门】判断奇偶数

【入门】判断某年某月的天数

【入门】判断平方数

【例22.3】回文数

Rainbow的信号

绿豆蛙的归宿

扑克牌

剪纸游戏 Cutting Game

1520：【例 1】分离的路径

1521：【例 2】矿场搭建

1522：网络

1523：嗅探器

1524：旅游航道

1525：电力

1526：Blockade

大整数加法

大整数减法

球形空间产生器

开关问题

装备购买

异或运算 XOR

计算系数

计数交换 Counting Swaps

古代猪文

立体推箱子

走迷宫

推箱子

矩阵距离

电路维修

装满的油箱 Full Tank

噩梦 Nightmare II

【例题1】电路维修

【例题2】魔板

【例 3】Knight Moves

1451：棋盘游戏

1452：Keyboarding

1453：移动玩具

1454：山峰和山谷

雪花雪花雪花 Snowflake Snow Snowflakes

回文子串的最大长度 Palindrome

后缀数组

兔子与兔子

周期 Period

前缀统计

最大异或对 The XOR Largest Pair

最长异或值路径 The xor-longest Path

1455：【例题1】Oulipo

1456：【例题2】图书管理

1457：Power Strings

1458：Seek the Name, Seek the Fame

1459：friends

1460：A Horrible Poem

1461：Beads

1462：Antisymmetry

1463：门票

1464：收集雪花

休息时间 Naptime

环路运输

坏掉的机器人 Broken Robot

排书 Booksort

回转游戏 Square Destroyer

破坏正方形 Square Destroyer

【基础】新生舞会

【例75.3】谁拿了最多奖学金

练75.1奖学金【07NOIP普及组】

【例76.1】病人排队

采购奖品2

岛屿

创世纪

Freda的传呼机

木棒

生日蛋糕

数独2 Sudoku

杰拉尔德和巨型象棋 Gerald and Giant Chess

它们中的多少个 How many of them

连通图 Connected Graph

装饰围栏 A Decorative Fence

1639：Biorhythms

1642：【例 2】Fibonacci 第 n 项

1643：【例 3】Fibonacci 前 n 项和

1644：【例 4】佳佳的 Fibonacci

1645：Fibonacci

1646：GT 考试

1647：迷路

最大异或和

1465：【例题1】剪花布条

1466：【例题2】Power Strings

1467：Radio Transmission

2.OKR-Periods of Words

1469：似乎在梦中见过的样子

1470：Censoring

1615：【例 1】序列的第 k 个数

1616：A 的 B 次方

1617：转圈游戏

1618：越狱

A 简单数据结构

巡逻

闇の連鎖

树网的核

雨天的尾巴

天天爱跑步

异象石

次小生成树

疫情控制

1552：【例 1】点的距离

1553：【例 2】暗的连锁

1554：【例 3】异象石

1555：【例 4】次小生成树

1556：Dis

1557：祖孙询问

1558：聚会

1559：跳跳棋

邻值查找

天使玩偶

第K小数 K-th Number

Dynamic Rankings 无测试数据

飞行员兄弟 The Pilots Brothers' refrigerator

占卜DIY

分形 Fractal

袭击 Raid

防线

赶牛入圈 Corral the Cows

糖果传递

士兵 Soldiers

数的进制转换 Number Base Conversion

耍杂技的牛 Cow Acrobats

最大的和 To the Max

任务 Task

括号画家

内存分配

双栈排序

表达式计算4

匹配统计

生日礼物

黑盒子 Black Box

城市游戏 City Game

矩阵 Matrix

牛奶矩阵 Milking Grid

项链 Necklace

电话列表 Phone List

滑动窗口 Sliding Window

树形地铁系统 Subway tree systems

靶形数独

虫食算

乳草的入侵

骑士精神

武士风度的牛

字串变换

立体推箱子2 Bloxorz II

涂满它 Flood-it!

玛雅游戏 Mayan游戏

导弹防御系统 Missile Defence System

算乘方的牛 Power Hungry Cows

巴士 The Buses

天气预报 Weather Forecast

换教室

计算器

魔法珠

排列计数

青蛙的约会

守卫者的挑战

新NIM游戏

233矩阵 233 Matrix

放弃测试 Dropping Test

最大公约数 GCD

格鲁吉亚和鲍勃 Georgia and Bob

龙哥的问题 Longge's Problem

矩阵幂求和 Matrix Power Series

天码 Sky Code

小部件厂 Widget Factory

阿九大战朱最学 Xiao 9(star)大战朱最学

异或 XOR

关押罪犯

可持久化并查集加强版

营业额统计

作诗

买票 Buy Tickets

Fotile模拟赛L

旅馆 Hotel

流星 Meteors

莫基亚 Mokia

海报 Picture

权值 Race

石头剪子布 Rochambeau

超级备忘录 SuperMemo

真正的骗子 True Liars

XOR和路径

干草堆

股票交易

花店橱窗

划分大理石

能量项链

扑克牌

棋盘分割

特别行动队

乌龟棋

陨石的秘密

旅行 Trip

计数问题 The Counting Problem

减操作 SUBTRACT

战略游戏 Strategic game

估算 Estimation

贿赂FIPA Bribing FIPA

围栏障碍训练场 Fence Obstacle Course

圆形数字 Round Numbers

K-Anonymous Sequence K匿名序列

Islands and Bridges 岛和桥

最大子矩阵 Islands and Bridges

Post Office 邮局

低买 BUY LOW, BUY LOWER

玉米田 Corn Fields

折叠序列 Folding

计算机 Computer

Blocks 消木块

芯片 Bugs Integrated, Inc

聚会

矿场搭建

杀人游戏

社交网络

升降梯上

四叶草魔杖

太鼓达人

逃不掉的路

逃学的小孩

直径

最优高铁环

婚礼 Wedding

交通实时查询系统

将他们分好队 Team Them Up!

稳定的牛分配 Steady Cow Assignment

排版幻灯片 Sorting Slides

观光 Sightseeing

会合 Rendezvous

冗余路径 Redundant Paths

平面 Planar

放置机器人 Place the Robots

国王的任务 King's Quest

约翰的旅行

回家 Going Home

从u到v还是从v到u？

GF和猫咪的玩具

排水沟 Drainage Ditches

雇佣收银员 Cashier Employment

北极网络 Arctic Network

空袭 Air Raid

谁拿了最多奖学金

Jam的计数法

排水系统

字符串匹配

移球游戏

微信步数

报数

数列

方差

棋局

种花(plant)

喵了个喵(meow)

建造军营(barrack)

比赛(match)

词典（dict）

三值逻辑（tribool）

双序列拓展（expand）

天天爱打卡

[NOIP2024] 编辑字符串

[NOIP2024] 遗失的赋值

[NOIP2024] 树的遍历

[NOIP2024] 树上查询

[NOIP2025] 糖果店 / candy（官方数据）

[NOIP2025] 清仓甩卖 / sale（官方数据）

[NOIP2025] 树的价值 / tree（官方数据）

[NOIP2025] 序列询问 / query（官方数据）

[NOIP 1998 普及组] 三连击

[NOIP 1998 普及组] 阶乘之和

[NOIP 1998 普及组] 幂次方

[NOIP 1999 普及组] Cantor 表

[NOIP 1999 普及组] 回文数

【NOIP1999】cantor表

[NOIP 2000 普及组] 税收与补贴问题

[NOIP 2000 普及组] 计算器的改良

[NOIP 2001 普及组] 数的计算

[NOIP 2001 普及组] 最大公约数和最小公倍数问题

[NOIP 2001 普及组] 求先序排列

[NOIP 2001 普及组] 装箱问题

[NOIP 2002 普及组] 级数求和

[NOIP 2002 普及组] 级数求和

选数

[NOIP 2002 普及组] 产生数

[NOIP 2002 普及组] 过河卒

[NOIP 2003 普及组] 乒乓球

[NOIP 2003 普及组] 数字游戏

[NOIP 2003 普及组] 栈

[NOIP 2003 普及组] 麦森数

[NOIP 2004 普及组] 不高兴的津津

[NOIP 2004 普及组] 花生采摘

[NOIP 2004 普及组] FBI 树

[NOIP 2004 普及组] 火星人

[NOIP 2005 普及组] 校门外的树

[NOIP 2005 普及组] 陶陶摘苹果

采药

[NOIP 2005 普及组] 循环

NOIP全国联赛普及组

[NOIP 2006 普及组] 明明的随机数

[NOIP 2006 普及组] 开心的金明

[NOIP 2006 普及组] Jam 的计数法

[NOIP2006 普及组] 数列

[NOIP 2007 普及组] 奖学金

[NOIP 2007 普及组] 纪念品分组

[NOIP 2007 普及组] 守望者的逃离

[NOIP 2007 普及组] Hanoi 双塔问题

[NOIP 2008 普及组] ISBN 号码

[NOIP 2008 普及组] 排座椅

[NOIP 2008 普及组] 传球游戏

[NOIP 2008 普及组] 立体图

传球游戏

[NOIP 2009 普及组] 多项式输出

[NOIP 2009 普及组] 分数线划定

[NOIP 2009 普及组] 细胞分裂

[NOIP 2009 普及组] 道路游戏

[NOIP 2010 普及组] 数字统计

[NOIP 2010 普及组] 接水问题

[NOIP 2010 普及组] 导弹拦截

[NOIP 2010 普及组] 三国游戏

导弹拦截

[NOIP 2011 普及组] 数字反转

[NOIP 2011 普及组] 统计单词数

[NOIP 2011 普及组] 表达式的值

[NOIP 2011 普及组] 瑞士轮

[NOIP 2012 普及组] 质因数分解

[NOIP 2012 普及组] 寻宝

[NOIP 2012 普及组] 摆花

[NOIP 2012 普及组] 文化之旅（疑似错题）

[NOIP 2013 普及组] 计数问题

[NOIP 2013 普及组] 表达式求值

[NOIP 2013 普及组] 小朋友的数字

[NOIP 2013 普及组] 车站分级

[NOIP 2014 普及组] 珠心算测验

[NOIP 2014 普及组] 比例简化

[NOIP 2014 普及组] 螺旋矩阵

[NOIP 2014 普及组] 子矩阵

[NOIP 2014 普及组] 珠心算测验

[NOIP 2015 普及组] 金币

[NOIP 2015 普及组] 扫雷游戏

[NOIP 2015 普及组] 求和

[NOIP 2015 普及组] 推销员

[NOIP 2016 普及组] 买铅笔

回文日期

[NOIP 2016 普及组] 海港

[NOIP 2016 普及组] 魔法阵

[NOIP 2017 普及组] 成绩

[NOIP 2017 普及组] 图书管理员

[NOIP 2017 普及组] 棋盘

[NOIP 2017 普及组] 跳房子

[NOIP 2018 普及组] 标题统计

龙虎斗

[NOIP 2018 普及组] 摆渡车

[NOIP 2018 普及组] 对称二叉树

[NOIP 1998 提高组] 拼数

[NOIP 1998 提高组] 拼数

[NOIP 1998 提高组] 进制位

[NOIP 1999 提高组] 导弹拦截

[NOIP 1999 提高组] 邮票面值设计（疑似错题）

[NOIP 1999 普及组/提高组] 旅行家的预算

[NOIP 2000 提高组] 进制转换

[NOIP 2000 提高组] 乘积最大

[NOIP 2000 提高组] 单词接龙（疑似错题）

[NOIP 2000 提高组] 方格取数

[NOIP 2001 提高组] 一元三次方程求解

[NOIP 2001 提高组] 数的划分

[NOIP 2001 提高组] 统计单词个数

[NOIP 2001 提高组] Car 的旅行路线

[NOIP 2002 提高组] 均分纸牌

[NOIP 2002 提高组] 字串变换（疑似错题）

[NOIP 2002 提高组] 自由落体

[NOIP 2002 提高组] 矩形覆盖

[NOIP 2003 提高组] 神经网络

[NOIP 2003 提高组] 侦探推理

[NOIP 2003 提高组] 加分二叉树

[NOIP 2003 提高组] 传染病控制（疑似错题）

[NOIP 2004 提高组] 津津的储蓄计划

[NOIP 2004 提高组] 合唱队形

合并果子

[NOIP 2004 提高组] 合并果子

[NOIP 2004 提高组] 虫食算

[NOIP 2005 提高组] 谁拿了最多奖学金

[NOIP 2005 提高组] 过河

[NOIP 2005 提高组] 篝火晚会

[NOIP 2005 提高组] 等价表达式

[NOIP 2006 提高组] 能量项链

[NOIP 2006 提高组] 金明的预算方案

[NOIP 2006 提高组] 作业调度方案

[NOIP 2006 提高组] 2^k 进制数

[NOIP 2007 提高组] 统计数字

[NOIP 2007 提高组] 字符串的展开

[NOIP 2007 提高组] 矩阵取数游戏

[NOIP 2007 提高组] 树网的核

[NOIP 2008 提高组] 笨小猴

[NOIP 2008 提高组] 火柴棒等式

[NOIP 2008 提高组] 传纸条

[NOIP 2008 提高组] 双栈排序

潜伏者

[NOIP 2009 提高组] Hankson 的趣味题

[NOIP 2009 提高组] 靶形数独

[NOIP 2009 提高组] 最优贸易

机器翻译

[NOIP 2010 提高组] 乌龟棋

[NOIP 2010 提高组] 关押罪犯

[NOIP 2010 提高组] 引水入城

铺地毯

[NOIP 2011 提高组] 铺地毯

[NOIP 2011 提高组] 观光公交

[NOIP 2011 提高组] 聪明的质监员

[NOIP 2011 提高组] 计算系数

[NOIP 2011 提高组] 选择客栈

[NOIP 2011 提高组] Mayan 游戏

[NOIP 2012 提高组] Vigenère 密码

[NOIP 2012 提高组] 国王游戏

[NOIP 2012 提高组] 开车旅行

[NOIP 2012 提高组] 同余方程

[NOIP 2012 提高组] 借教室

[NOIP 2012 提高组] 疫情控制

[NOIP 2013 提高组] 转圈游戏

[NOIP 2013 提高组] 火柴排队

[NOIP 2013 提高组] 货车运输

[NOIP 2013 提高组] 积木大赛

[NOIP 2013 提高组] 花匠

[NOIP 2013 提高组] 华容道

[NOIP 2014 提高组] 生活大爆炸版石头剪刀布

[NOIP 2014 提高组] 联合权值

[NOIP 2014 提高组] 飞扬的小鸟

[NOIP 2014 提高组] 无线网络发射器选址

[NOIP 2014 提高组] 寻找道路

[NOIP 2014 提高组] 解方程

[NOIP 2015 提高组] 神奇的幻方

[NOIP 2015 提高组] 信息传递

[NOIP 2015 提高组] 斗地主

[NOIP 2015 提高组] 跳石头

[NOIP 2015 提高组] 子串

[NOIP 2015 提高组] 运输计划

[NOIP 2016 提高组] 玩具谜题

[NOIP 2016 提高组] 换教室

[NOIP 2016 提高组] 天天爱跑步

[NOIP 2016 提高组] 组合数问题

[NOIP 2016 提高组] 蚯蚓

[NOIP 2016 提高组] 愤怒的小鸟

[NOIP 2017 提高组] 小凯的疑惑

[NOIP 2017 提高组] 时间复杂度

[NOIP 2017 提高组] 逛公园

[NOIP 2017 提高组] 奶酪

[NOIP 2017 提高组] 宝藏

[NOIP 2017 提高组] 列队

[NOIP 2018 提高组] 铺设道路

[NOIP 2018 提高组] 货币系统

[NOIP 2018 提高组] 赛道修建

[NOIP 2018 提高组] 旅行

[NOIP 2018 提高组] 填数游戏

[NOIP 2018 提高组] 保卫王国

1527：【例 1】欧拉回路

1528：【例 2】单词游戏

1529：欧拉回路

1530：Ant Trip

1531：John‘s Trip

1532：太鼓达人

1533：相框

1534：原始生物

电影选择 Cinema

货仓选址

七夕祭

动态中位数 Running Median

超快速排序 Ultra-QuickSort

奇数码问题

普通平衡树

1565：【例 1】营业额统计

1566：宠物收养所

1567：郁闷的出纳员

1568：普通平衡树

石子合并

金字塔

多边形 Polygon

1569：【例 1】石子合并

1570：【例 2】能量项链

1571：【例 3】凸多边形的划分

1572：括号配对

1573：分离与合体

1574：矩阵取数游戏

1513：【例 1】受欢迎的牛

1514：【例 2】最大半连通子图

1515：网络协议

1516：消息的传递

1517：间谍网络

1518：抢掠计划

1519：和平委员会

「JOI 2021 Final」有趣的家庭菜园 4

激光炸弹

增减序列 IncDec Sequence

最高的牛 Tallest Cow

1541：【例 1】数列区间最大值

1542：【例 2】最敏捷的机器人

1543：【例 3】与众不同

1544：天才的记忆

1545：Balanced Lineup

1546：NOIP2011 选择客栈

Devu和鲜花 Devu and Flowers

破译密码 Zap

诗人小G

一个古老的石头游戏 An old Stone Game

小猫爬山

数独

1440：【例题1】数的划分

1441：【例题2】生日蛋糕

1442：【例题3】小木棍

【例题4】Addition Chains

1444：埃及分数

1445：平板涂色

1446：素数方阵

1447：靶形数独

【入门】求一个两位数的个位和十位的和

【基础】分钱游戏

【例2.1】Hello World

【例4.1】交换两个数的位置

练4.3 3个连续数

【例6.1】比赛成绩

练6.1 植树造林

练7.2 保留12位小数

练7.3买图书

【例8.1】人民币支付

练8.4带余除法

【例9.1】输出字符三角形

【例9.3】小写字母转大写字母

练9.1 字符菱形

【例10.1】机票打折

【例10.2】分钱游戏

练11.1温度表达转化

练11.2 间隔输出

练11.4计算(a+b)×c的值

【例13.2】电子表

【例13.3】时间差

练13.3 反向输出一个三位数

【例14.3】数学课上

练14.3 地球人口承载力估计

【入门】优秀成绩的平均分

清理班次 Cleaning Shifts

清理班次 Cleaning Shifts2

赤壁之战 The Battle of Chibi

1560：【例 1】树的统计

1561：「HAOI2015」树上操作

1562：「NOI2015」软件包管理器

1563：染色

1564：「SDOI2014」旅行

1504：【例 1】Word Rings

1504：【例 1】Word Rings

1506：最小圈

1507：虫洞 Wormholes

1508：Easy SSSP

C 并非数据结构

启示录

月之谜

1585：【例 1】Amount of Degrees

1586：【例 2】数字游戏

1587：【例 3】Windy 数

1588：数字游戏

1589：不要 62

1590：恨 7 不成妻

4.数字计数

没有上司的舞会

没有上司的舞会

积蓄程度 Accumulation Degree

1574：矩阵取数游戏

1576：【例 2】选课

1577：【例 3】数字转换

1578：【例 4】战略游戏

1579：【例 5】皇宫看守

1580：加分二叉树

1581：旅游规划

1582：周年纪念晚会

1583：叶子的染色

1584：骑士

楼兰图腾

一个简单的整数问题 A Simple Problem with Integers

谜一样的牛 Lost Cows

1535：【例 1】数列操作

1536：【例 2】数星星 Stars

1537：【例 3】校门外的树

1538：清点人数

1539：简单题

1540：打鼹鼠_二维树状数组

防晒 Sunscreen

畜栏预定 Stall Reservation

国王游戏

给树染色 Color a Tree

雷达设备 Radar Installation

【例题1】活动安排

【例题2】种树

【例题3】喷水装置

【例题4】加工生产调度

1426：【例题5】智力大冲浪

1427：数列极差

1428：数列分段

1429：线段

1430：家庭作业

1431：钓鱼

1432：糖果传递

降水（rain）

查找（search）

概率（pr）

回文（pali)

重建道路

地铁换乘

1471：【例题1】Phone List

1472：【例题2】The XOR Largest Pair

1473：【例题3】Codechef REBXOR

1474：Immediate Decodability

1475：L语言

1476：Secret Message 秘密信息

1477：【SCOI2016】背单词

1478：The xor-longest Path

1631：【例 1】青蛙的约会

1632：【例 2】[NOIP2012]同余方程

1633：【例 3】Sumdiv

1634：【例 4】曹冲养猪

1635：【例 5】Strange Way to Express Integers

1636：【例 6】计算器

1637：荒岛野人

1638：五指山

1639：Biorhythms

1639：Biorhythms

【基础】小 X 与位运算(bignum)

【基础】小X转进制

练60.1 丢失的数字

GESP4级2309 进制转换

唯一元素的和

乒乓游戏

64位整数乘法

最短Hamilton路径

起床困难综合症

增加模数 Raising Modulo Numbers

a^b

舞动的夜晚

有线电视网络 Cable TV Network

K取方格数

B城 BLO

网络 Network

圆桌骑士 Knights of the Round Table

看牛 Watchcow

你能回答这些问题吗 Can you answer on these queries III

亚特兰蒂斯 Atlantis

一个简单的整数问题2 A Simple Problem with Integers

区间最大公约数 Interval GCD

窗内的星星 Stars in Your Window

1547：【例 1】区间和

1548：【例 2】A Simple Problem with Integers

1550：花神游历各国

1549：最大数

1551：维护序列

运输小猫 Cats Transport

任务安排1

任务安排2

任务安排3

1606：【例 1】任务安排 1

1607：【例 2】任务安排 2

1608：【例 3】任务安排 3

1609：【例 4】Cats Transport

1610：玩具装箱

1611：仓库建设

1612：特别行动队

1613：打印文章

1614：锯木厂选址

【例25.3】输出奇偶数之和

【例26.1】人类的本质

【例31.1】石头剪子布

【例35.3】最大公约数

【例38.2】图形输出

【入门】判断质数

【基础】骑士的金币

【入门】完数判断

【例28.3】数列分段

练33.3 水仙花数

练36.3 九九乘法表

杨老师的照相排列 Mr. Young's Picture Permutations

饼干 Cookies

I-区域 I-country

分级 Making the Grade

移动服务 Mobile Service

传纸条

最长公共上升子序列 LCIS

1625：【例 1】反素数 Antiprime

【例 2】Hankson 的趣味题

1627：【例 3】最大公约数

1628：X-factor Chain

1629：聪明的燕姿

1630：SuperGCD

反素数

余数之和

Hankson的趣味题

可见的点

同余方程

最幸运的数字 The Luckiest Number

表达整数的奇怪方式 Strange Way to Express Integers

斐波那契 Fibonacci

石头游戏

银河

学校网络 Network of Schools

北大ACM队的远足 PKU ACM Team's Excursion

卡图难题 Katu Puzzle

牧师约翰最忙碌的一天 Priest Johns Busiest Day

吞噬变异

通信线路 Telephone Lines

最优贸易

道路与航线

排序 Sorting It All Out

观光之旅 Sightseeing Trip

牛站 Cow Relays

1494：【例 1】Sightseeing Trip

1495：【例 2】孤岛营救问题

1496：【例 3】架设电话线

1497：农场派对

1498：Roadblocks 无测试数据 (第二短路？

1499：最短路计数

1500：新年好

1501：最优贸易

1502：汽车加油行驶问题

1503：道路和航线

【基础】既生瑜，何生亮！

【入门】素数回文数

【入门】桐桐数

【基础】亲密数对

【基础】图书管理员（librarian）

【基础】小张的进制转换

【入门】统计字符的个数

【入门】字符串出现次数

【入门】字符串的插入

练69.5 恺撒加密术

练70.2 判断字符串是否为回文

练70.3 删除单词后缀

练71.1成绩排序

字符串的查找删除

括弧匹配检验

计算

车厢调度 (train)

表达式求值

洗盘子

堆箱子

Bus of Characters

火车进出栈问题

直方图中最大的矩形 Largest Rectangle in a Histogram

编辑器 Editor

阶乘分解

质数距离 Prime Distance

1648：【例 1】「NOIP2011」计算系数

1649：【例 2】2^k 进制数

1650：【例 3】组合

1651：【例 4】古代猪文

1652：牡牛和牝牛

1653：方程的解

1654：车的放置

1655：数三角形

1656：Combination

1657：序列统计

1658：超能粒子炮 · 改

1659：礼物

1660：网格

1661：有趣的数列

1662：树屋阶梯

超级素数

1619：【例 1】Prime Distance

1620：质因数分解

1621：轻拍牛头

1622：Goldbach’s Conjecture

1623：Sherlock and His Girlfriend

1624：樱花

蒙德里安的梦想 Mondriaan's Dream

炮兵阵地

宝藏

走廊泼水节

野餐规划 Picnic Planning

沙漠之王最优比率生成树

黑暗城堡

1486：【例题1】黑暗城堡

1487：【例 2】北极通讯网络

1488：新的开始

1489：构造完全图

1490：秘密的牛奶运输

1491：Tree

1492：最小生成树计数

1493：次小生成树

1592：【例 1】国王

1593：【例 2】牧场的安排

1594：涂抹果酱

1595：炮兵阵地

1596：动物园
Recent Solutions
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cspj组2022年初赛

2021CSPJ初赛

CSPJ2020初赛

T4、运输计划（transport）

T3、巧克力（chocolate）

T2、购物（shopping）

T1、收割南瓜（pumpkin）

D 数学题 0

C 数学题 -1
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