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挑战ACM编程是自由参与组。提供挑战题、水题、白书、紫书和蓝书等等……
- POJ 1321 棋盘问题
- POJ 2251 Dungeon Master
- POJ 3278 Catch That Cow
- POJ 3279 Fliptile
- POJ 1426 Find The Multiple
- POJ 3126 Prime Path
- POJ 3087 Shuffle'm Up
- POJ 3414 Pots
- FZU 2150 Fire Game
- UVA 11624 Fire!
- POJ 3984 迷宫问题
- HDU 1241 Oil Deposits
- HDU 1495 非常可乐
- HDU 2612 Find a way
- HDU 1043 Eight
- HDU 3567 Eight II
- HDU 2181 哈密顿绕行世界问题
- HDU 3533 Escape
- HDU 1560 DNA sequence
- ZOJ 2477 Magic Cube
- HDU 3085 Nightmare Ⅱ
- HDU 1067 Gap
- HDU 2102 A计划
- HDU 3001 Travelling
- HUST 1017 Exact cover
- ZOJ 3209 Treasure Map
- HDU 2295 Radar
- FZU 1686 神龙的难题
- POJ 1084 Square Destroyer
- POJ 3074 Sudoku
- ZOJ 3122 Sudoku
- HDU 4069 Squiggly Sudoku
- HDU 3335 Divisibility
- HDU 4979 A simple math problem.
- HDU 5046 Airport
- POJ 2387 Til the Cows Come Home
- POJ 2253 Frogger
- POJ 1797 Heavy Transportation
- POJ 3268 Silver Cow Party
- POJ 1860 Currency Exchange
- POJ 3259 Wormholes
- POJ 1502 MPI Maelstrom
- POJ 3660 Cow Contest
- POJ 2240 Arbitrage
- POJ 1511 Invitation Cards
- POJ 3159 Candies
- POJ 2502 Subway
- POJ 1062 昂贵的聘礼
- POJ 1847 Tram
- LightOJ 1074 Extended Traffic
- HDU 4725 The Shortest Path in Nya Graph
- HDU 3416 Marriage Match IV
- HDU 4370 0 or 1
- POJ 3169 Layout
- POJ 2236 Wireless Network
- POJ 1611 The Suspects
- HDU 1213 How Many Tables
- HDU 3038 How Many Answers Are Wrong
- POJ 1182 食物链
- POJ 1417 True Liars
- POJ 1456 Supermarket
- POJ 1733 Parity game
- POJ 1984 Navigation Nightmare
- POJ 2492 A Bug's Life
- POJ 2912 Rochambeau
- ZOJ 3261 Connections in Galaxy War
- HDU 1272 小希的迷宫
- POJ 1308 Is It A Tree?
- POJ 1251 Jungle Roads
- POJ 1287 Networking
- POJ 2031 Building a Space Station
- POJ 2421 Constructing Roads
- ZOJ 1586 QS Network
- POJ 1789 Truck History
- POJ 2349 Arctic Network
- POJ 1751 Highways
- POJ 1258 Agri-Net
- POJ 3026 Borg Maze
- POJ 1679 The Unique MST
- HDU 1233 还是畅通工程
- HDU 1301 Jungle Roads
- HDU 1875 畅通工程再续
- HDU 1166 敌兵布阵
- HDU 1754 I Hate It
- POJ 3468 A Simple Problem with Integers
- POJ 2528 Mayor's posters
- HDU 1698 Just a Hook
- ZOJ 1610 Count the Colors
- POJ 3264 Balanced Lineup
- HDU 4027 Can you answer these queries?
- HDU 1540 Tunnel Warfare
- HDU 3974 Assign the task
- HDU 4578 Transformation
- HDU 4614 Vases and Flowers
- HDU 4553 约会安排
- POJ 1177 Picture
- HDU 1255 覆盖的面积
- HDU 1542 Atlantis
- HDU 3642 Get The Treasury
- POJ 1679 The Unique MST
- HDU 4081 Qin Shi Huang's National Road System
- UVA 10600 ACM Contest and Blackout
- UVA 10462 Is There A Second Way Left?
- POJ 3164 Command Network
- UVA 11183 Teen Girl Squad
- HDU 2121 Ice_cream’s world II
- HDU 4009 Transfer water
- UVA 10766 Organising the Organisation
- SPOJ DETER3 Find The Determinant III
- URAL 1627 Join
- HDU 4305 Lightning
- HDU 4408 Minimum Spanning Tree
- SPOJ HIGH Highways
- POJ 1236 Network of Schools
- UVA 315 Network
- UVA 796 Critical Links
- POJ 3694 Network
- POJ 3177 Redundant Paths
- HDU 4612 Warm up
- HDU 4635 Strongly connected
- HDU 4685 Prince and Princess
- HDU 4738 Caocao's Bridges
- HDU 1045 Fire Net
- HDU 2444 The Accomodation of Students
- HDU 1083 Courses
- HDU 1281 棋盘游戏
- HDU 2819 Swap
- HDU 2389 Rain on your Parade
- HDU 4185 Oil Skimming
- POJ 3020 Antenna Placement
- HDU 1054 Strategic Game
- HDU 1151 Air Raid
- POJ 2594 Treasure Exploration
- HDU 3829 Cat VS Dog
- POJ 2289 Jamie's Contact Groups
- POJ 2112 Optimal Milking
- POJ 3189 Steady Cow Assignment
- HDU 2255 奔小康赚大钱
- HDU 3488 Tour
- URAL 1099 Work Scheduling
- HDU 4687 Boke and Tsukkomi
- POJ 3436 ACM Computer Factory
- POJ 3281 Dining
- POJ 1087 A Plug for UNIX
- POJ 2195 Going Home
- POJ 2516 Minimum Cost
- POJ 1459 Power Network
- HDU 4280 Island Transport
- HDU 4292 Food
- HDU 4289 Control
- UVA 10480 Sabotage
- HDU 2732 Leapin' Lizards
- HDU 3338 Kakuro Extension
- HDU 3605 Escape
- HDU 3081 Marriage Match II
- HDU 3416 Marriage Match IV
- HDU 1024 Max Sum Plus Plus
- HDU 1029 Ignatius and the Princess IV
- HDU 1069 Monkey and Banana
- HDU 1074 Doing Homework
- HDU 1087 Super Jumping! Jumping! Jumping!
- HDU 1114 Piggy-Bank
- HDU 1176 免费馅饼
- HDU 1260 Tickets
- HDU 1257 最少拦截系统
- HDU 1160 FatMouse's Speed
- POJ 1015 Jury Compromise
- POJ 1458 Common Subsequence
- POJ 1661 Help Jimmy
- POJ 2533 Longest Ordered Subsequence
- POJ 3186 Treats for the Cows
- HDU 1078 FatMouse and Cheese
- HDU 2859 Phalanx
- POJ 3616 Milking Time
- POJ 3666 Making the Grade
- POJ 2318 TOYS
- POJ 2398 Toy Storage
- POJ 3304 Segments
- POJ 1269 Intersecting Lines
- POJ 1556 The Doors
- POJ 2653 Pick-up sticks
- POJ 1066 Treasure Hunt
- POJ 1410 Intersection
- POJ 1696 Space Ant
- POJ 3347 Kadj Squares
- POJ 2826 An Easy Problem?!
- POJ 1039 Pipe
- POJ 3449 Geometric Shapes
- POJ 1584 A Round Peg in a Ground Hole
- LightOJ 1370 Bi-shoe and Phi-shoe
- LightOJ 1356 Prime Independence
- LightOJ 1341 Aladdin and the Flying Carpet
- LightOJ 1336 Sigma Function
- LightOJ 1282 Leading and Trailing
- LightOJ 1259 Goldbach`s Conjecture
- LightOJ 1245 Harmonic Number (II)
- LightOJ 1236 Pairs Forming LCM
- LightOJ 1234 Harmonic Number
- LightOJ 1220 Mysterious Bacteria
- LightOJ 1214 Large Division
- LightOJ 1213 Fantasy of a Summation
- LightOJ 1197 Help Hanzo
- LightOJ 1138 Trailing Zeroes (III)
- UVA 11426 GCD - Extreme (II)
- UVA 11754 Code Feat
- UVA 11916 Emoogle Grid
- POJ 1061 青蛙的约会
- POJ 2115 C Looooops
- POJ 2116 Death to Binary?
- HDU 2161 Primes
- UVA 11827 Maximum GCD
- UVA 10200 Prime Time
- SGU 106 The equation
- POJ 2478 Farey Sequence
- UVA 11752 The Super Powers
- CodeForces 55D Beautiful numbers
- HDU 4352 XHXJ's LIS
- HDU 2089 不要62
- HDU 3555 Bomb
- POJ 3252 Round Numbers
- HDU 3709 Balanced Number
- HDU 3652 B-number
- HDU 4734 F(x)
- ZOJ 3494 BCD Code
- HDU 4507 吉哥系列故事――恨7不成妻
- SPOJ BALNUM Balanced Numbers
- HDU 1711 Number Sequence
- HDU 1686 Oulipo
- HDU 2087 剪花布条
- HDU 3746 Cyclic Nacklace
- HDU 1358 Period
- HUST 1010 The Minimum Length
- POJ 2406 Power Strings
- POJ 2752 Seek the Name, Seek the Fame
- POJ 3080 Blue Jeans
- HDU 2594 Simpsons’ Hidden Talents
- HDU 3336 Count the string
- HDU 4300 Clairewd’s message
- HDU 1238 Substrings
- HDU 2328 Corporate Identity
- HDU 3374 String Problem
- HDU 2609 How many
- FZU 1901 Period II
- POJ 3746 Teacher YYF
- HDU 3613 Best Reward
- POJ 3376 Finding Palindromes
- POJ 3974 Palindrome
- HDU 4513 吉哥系列故事――完美队形II
- HDU 3294 Girls' research
- HDU 3068 最长回文
- HDU 4847 Wow! Such Doge!
- HDU 4763 Theme Section
- HDU 2222 Keywords Search
- HDU 2896 病毒侵袭
- HDU 3065 病毒侵袭持续中
- ZOJ 3430 Detect the Virus
- POJ 2778 DNA Sequence
- HDU 2243 考研路茫茫――单词情结
- POJ 1625 Censored!
- HDU 2825 Wireless Password
- HDU 2296 Ring
- HDU 2457 DNA repair
- ZOJ 3228 Searching the String
- HDU 3341 Lost's revenge
- HDU 3247 Resource Archiver
- ZOJ 3494 BCD Code
- HDU 4758 Walk Through Squares
- HDU 4511 小明系列故事――女友的考验
- POJ 1743 Musical Theme
- POJ 3261 Milk Patterns
- SPOJ DISUBSTR Distinct Substrings
- SPOJ SUBST1 New Distinct Substrings
- POJ 2406 Power Strings
- SPOJ REPEATS Repeats
- POJ 3693 Maximum repetition substring
- POJ 2774 Long Long Message
- POJ 3415 Common Substrings
- POJ 3294 Life Forms
- SPOJ PHRASES Relevant Phrases of Annihilation
- POJ 1226 Substrings
- UVA 11475 Extend to Palindrome
- POJ 3581 Sequence
- POJ 3450 Corporate Identity
- POJ 3080 Blue Jeans
- POJ 2758 Checking the Text
- CodeForces 450B Jzzhu and Sequences
- HDU 5015 233 Matrix
- HDU 4990 Reading comprehension
- UVA 11651 Krypton Number System
- HDU 4965 Fast Matrix Calculation
- UVA 11551 Experienced Endeavour
- UVA 10689 Yet another Number Sequence
- UVA 11149 Power of Matrix
- UVA 10655 Contemplation! Algebra
- UVA 1386 Cellular Automaton
- UVA 10870 Recurrences
- UVA 11885 Number of Battlefields
- HDU 4565 So Easy!
- CodeForces 392C Yet Another Number Sequence
- CodeForces 385E Bear in the Field
- FZU 1911 Construct a Matrix
- UVA 10518 How Many Calls?
- HDU 4549 M斐波那契数列
- HDU 4686 Arc of Dream
- HDU 3507 Print Article
- HDU 2829 Lawrence
- HDU 4528 小明系列故事――捉迷藏
- HDU 1300 Pearls
- HDU 2993 MAX Average Problem
- UVALive 5097 Cross the Wall
- HDU 3045 Picnic Cows
- HDU 3516 Tree Construction
- POJ 1160 Post Office
- POJ 1180 Batch Scheduling
- POJ 2018 Best Cow Fences
- POJ 3709 K-Anonymous Sequence
- POJ 2841 Navigation Game
- POJ 1260 Pearls
- UVA 12594 Naming Babies
- HDU 3480 Division
- UVALive 6771 Buffed Buffet
- LightOJ 1027 A Dangerous Maze
- LightOJ 1030 Discovering Gold
- LightOJ 1038 Race to 1 Again
- LightOJ 1079 Just another Robbery
- LightOJ 1104 Birthday Paradox
- LightOJ 1151 Snakes and Ladders
- LightOJ 1248 Dice (III)
- LightOJ 1265 Island of Survival
- LightOJ 1274 Beating the Dataset
- LightOJ 1284 Lights inside 3D Grid
- LightOJ 1287 Where to Run
- LightOJ 1317 Throwing Balls into the Baskets
- LightOJ 1321 Sending Packets
- LightOJ 1342 Aladdin and the Magical Sticks
- LightOJ 1364 Expected Cards
- LightOJ 1395 A Dangerous Maze (II)
- LightOJ 1408 Batting Practice
- ZOJ 3537 Cake
- LightOJ 1422 Halloween Costumes
- POJ 2955 Brackets
- CodeForces 149D Coloring Brackets
- POJ 1651 Multiplication Puzzle
- ZOJ 3469 Food Delivery
- HDU 4283 You Are the One
- HDU 2476 String painter
- POJ 3335 Rotating Scoreboard
- POJ 3130 How I Mathematician Wonder What You Are!
- POJ 1474 Video Surveillance
- POJ 1279 Art Gallery
- POJ 3525 Most Distant Point from the Sea
- POJ 3384 Feng Shui
- POJ 1755 Triathlon
- POJ 2540 Hotter Colder
- POJ 2451 Uyuw's Concert
- POJ 1271 Nice Milk
- UVA 11722 Joining with Friend
- UVA 11722 he Sea
- UVALive 7295 Positive Con Sequences
- UVALive 7292 Refract Facts
- UVALive 7297 Hounded by Indecision
- UVALive 7346 Avoiding an Arrrgument
- UVALive 7521 Kinfolk
- UVALive 7347 Of the Children
- UVALive 7348 Talking About Numbers
- UVALive 7349 The Scheming Gardener
- LightOJ 1433 Minimum Arc Distance
- LightOJ 1387 Setu
- LightOJ 1338 Hidden Secret!
- LightOJ 1261 K-SAT Problem
- LightOJ 1249 Chocolate Thief
- LightOJ 1251 Forming the Council
- LightOJ 1026 Critical Links
- LightOJ 1063 Ant Hills
- LightOJ 1291 Real Life Traffic
- LightOJ 1308 Ant Network
- LightOJ 1074 Extended Traffic
- LightOJ 1108 Instant View of Big Bang
- LightOJ 1221 Travel Company
- LightOJ 1002 Country Roads
- LightOJ 1029 Civil and Evil Engineer
- LightOJ 1040 Donation
- LightOJ 1041 Road Construction
- LightOJ 1059 Air Ports
- LightOJ 1123 Trail Maintenance
- LightOJ 1124 Cricket Ranking
- LightOJ 1380 Teleport
- LightOJ 1384 Stream My Contest
- LightOJ 1348 Aladdin and the Return Journey
- LightOJ 1250 Village Postman
- LightOJ 1256 Word Puzzle
- LightOJ 1003 Drunk
- LightOJ 1149 Factors and Multiples
- LightOJ 1150 Ghosts!
- LightOJ 1152 Hiding Gold
- LightOJ 1429 Assassin`s Creed (II)
- LightOJ 1171 Knights in Chessboard (II)
- LightOJ 1356 Prime Independence
- LightOJ 1153 Internet Bandwidth
- LightOJ 1154 Penguins
- LightOJ 1155 Power Transmission
- LightOJ 1156 Jumping Frogs
- LightOJ 1167 Dangerous Tunnels
- LightOJ 1176 Getting a T-shirt
- LightOJ 1177 Angry Programmer
- LightOJ 1330 Binary Matrix
- LightOJ 1405 The Great Escape
- LightOJ 1071 Baker Vai
- LightOJ 1222 Gift Packing
- LightOJ 1237 Cyber Cafe
- LightOJ 1243 Guardian Knights
- LightOJ 1290 The Great Merger
- LightOJ 1198 Karate Competition
- LightOJ 1431 The Party for the Rich
- LightOJ 1427 Substring Frequency (II)
- LightOJ 1258 Making Huge Palindromes
- LightOJ 1268 Unlucky Strings
- LightOJ 1334 Genes in DNA
- LightOJ 1428 Melody Comparison
- LightOJ 1314 Names for Babies
- LightOJ 1347 Aladdin and the Magical Lamp
- LightOJ 1056 Olympics
- LightOJ 1062 Crossed Ladders
- LightOJ 1130 Intersection between Circle and Rectangle
- LightOJ 1137 Expanding Rods
- LightOJ 1190 Sleepwalking
- LightOJ 1208 Dangerous Bull! Who Wants to Pull?
- LightOJ 1260 Race Track
- LightOJ 1292 Laser Shot
- LightOJ 1320 Farmers` Tale
- LightOJ 1346 Aladdin and the Rocky Mountains
- LightOJ 1358 Fukushima Nuclear Blast
- LightOJ 1432 Overlapping Sticks
- LightOJ 1203 Guarding Bananas
- LightOJ 1239 Convex Fence
- LightOJ 1285 Drawing Simple Polygon
- LightOJ 1313 Protect the Mines
- LightOJ 1418 Trees on My Island
- LightOJ 1151 Snakes and Ladders
- LightOJ 1272 Maximum Subset Sum
- LightOJ 1279 Graph Coloring
- LightOJ 1288 Subsets Forming Perfect Squares
- LightOJ 1052 String Growth
- LightOJ 1065 Number Sequence
- LightOJ 1070 Algebraic Problem
- LightOJ 1131 Just Two Functions
- LightOJ 1132 Summing up Powers
- LightOJ 1142 Summing up Powers (II)
- LightOJ 1160 Discovering Paths in Grid
- LightOJ 1172 Krypton Number System
- LightOJ 1244 Tiles
- LightOJ 1268 Unlucky Strings
- LightOJ 1332 Kings in Chessboard
- LightOJ 1376 Tetromino
- LightOJ 1355 Game of CS
- LightOJ 1186 Incredible Chess
- LightOJ 1192 Left Right
- LightOJ 1247 Matrix Game
- LightOJ 1253 Misere Nim
- LightOJ 1393 Crazy Calendar
- LightOJ 1199 Partitioning Game
- LightOJ 1229 Treblecross
- LightOJ 1296 Again Stone Game
- LightOJ 1315 Game of Hyper Knights
- LightOJ 1344 Aladdin and the Game of Bracelets
- LightOJ 1401 No More Tic-tac-toe
- LightOJ 1007 Mathematically Hard
- LightOJ 1024 Eid
- LightOJ 1028 Trailing Zeroes (I)
- LightOJ 1035 Intelligent Factorial Factorization
- LightOJ 1045 Digits of Factorial
- LightOJ 1067 Combinations
- LightOJ 1077 How Many Points?
- LightOJ 1090 Trailing Zeroes (II)
- LightOJ 1098 A New Function
- LightOJ 1109 False Ordering
- LightOJ 1138 Trailing Zeroes (III)
- LightOJ 1163 Bank Robbery
- LightOJ 1197 Help Hanzo
- LightOJ 1213 Fantasy of a Summation
- LightOJ 1214 Large Division
- LightOJ 1215 Finding LCM
- LightOJ 1220 Mysterious Bacteria
- LightOJ 1234 Harmonic Number
- LightOJ 1236 Pairs Forming LCM
- LightOJ 1245 Harmonic Number (II)
- LightOJ 1259 Goldbach`s Conjecture
- LightOJ 1278 Sum of Consecutive Integers
- UVALive 4983 Alignment of Code
- UVALive 4984 Binary Operation
- UVALive 4985 Cactus Revolution
- UVALive 4986 Dome of Circus
- UVALive 4987 Evacuation Plan
- UVALive 4988 Factorial Simplification
- UVALive 4989 Game of 10
- UVALive 4990 Hands of Poker
- UVALive 4991 Ideal Path
- UVALive 4992 Jungle Outpost
- UVALive 4993 K-Graph Oddity
- UVALive 5879 Boring Card Game
- UVALive 5880 Vigenère Cipher Encryption
- UVALive 5881 Unique Encryption Keys
- UVALive 5882 Racing Car Trail
- UVALive 5883 Stack Machine Programmer
- UVALive 5884 Strange Regulations
- UVALive 5885 Vigenère Cipher Analysis
- UVALive 5886 The Grille
- UVALive 5887 Unchanged Picture
- UVALive 5888 Stack Machine Executor
- URAL 1800 Murphy's Law
- URAL 1801 The Revolution Cup
- URAL 1802 Cube Puzzle
- URAL 1803 The Czechs' Rifles
- URAL 1804 The Machinegunners in a Playoff
- URAL 1805 Chapaev and a Cipher Grille
- URAL 1806 Mobile Telegraphs
- URAL 1807 Cartridges for Maxim
- URAL 1808 Chapaev at the Planet Ocean
- URAL 1809 Chapaev and Potatoes
- UVALive 6743 Movie
- UVALive 6744 SMS Poll
- UVALive 6745 Traitor
- UVALive 6746 Intelligent Traffic Surveillance
- UVALive 6747 BitTorrent
- UVALive 6748 2D-Solar System
- UVALive 6749 Bowling Ball
- UVALive 6750 LED Circuit
- UVALive 6751 Mixed Flight Plans
- UVALive 6752 Sweeping Robot
- UVALive 6753 Wedding Hall
- UVALive 6671 ASCII Puzzle
- UVALive 6672 Bonus Cards
- UVALive 6673 Cactus Automorphisms
- UVALive 6674 Dictionary
- UVALive 6675 Easy Geometry
- UVALive 6676 Fraud Busters
- UVALive 6677 Green Energy
- UVALive 6678 Hack Protection
- UVALive 6679 Interactive Interception
- UVALive 6680 Join the Conversation
- UVALive 6681 Kabaleo Lite
- UVALive 4843 Sales
- UVALive 4844 String Popping
- UVALive 4845 Password
- UVALive 4846 Mines
- UVALive 4847 Binary Search Tree
- UVALive 4848 Tour Belt
- UVALive 4849 String Phone
- UVALive 4850 Installations
- UVALive 4851 Restaurant
- UVALive 4852 KTX Train Depot
- UVALive 6570 Mixing Colours
- UVALive 6571 It Can Be Arranged
- UVALive 6572 Shopping Malls
- UVALive 6573 Decoding the Hallway
- UVALive 6574 Joe is learning to speak
- UVALive 6575 Odd and Even Zeroes
- UVALive 6576 VivoParc
- UVALive 6577 Binary Tree
- UVALive 6578 Trending Topic
- UVALive 6579 Cleaning the Hallway