- 各种杂题，水题，模拟，包括简单数论。
- 1001 A+B
- 1002 A+B+C
- 1009 Fat Cat
- 1010 The Angle
- 1011 Unix ls
- 1012 Decoding Task
- 1019 Grandpa's Other Estate
- 1034 Simple Arithmetics
- 1036 Complete the sequence!
- 1043 Maya Calendar
- 1054 Game Prediction
- 1057 Mileage Bank
- 1067 Rails
- 1078 u Calculate e
- 1080 Digital Roots
- 1084 Booklet Printing
- 1085 Finding Rectangles
- 1094 Packets
- 1095 Crosswords
- 1100 Simply Syntax
- 1101 TEX Quotes
- 1104 Expanding Fractions
- 1105 Egyptian Multiplication
- 1107 Prime Cuts
- 1109 Uniform Generator
- 1112 Centipede Collisions
- 1117 Octal Fractions
- 1128 Perfect Cubes
- 1131 Basically Speaking
- 1135 Data Bugs
- 1138 LC-Display
- 1142 S-Trees
- 1148 Gridland
- 1152 The Blocks Problem
- 1153 Ecological Bin Packing
- 1154 The Skyline Problem
- 1159 Tree Summing
- 1160 Power of Cryptography
- 1161 Simulation Wizardry
- 1162 Climbing Trees
- 1165 Mutant Flatworld Explorers
- 1166 Greedy Gift Givers
- 1167 Pipe Fitters
- 1168 Trees on the level
- 1172 The Errant Physicist
- 1173 ``Accordian'' Patience
- 1174 Software CRC
- 1176 Roman Roulette
- 1179 The Dole Queue
- 1187 Mouse Clicks
- 1189 Student Grants
- 1190 Gondwanaland Telecom
- 1199 Recycling
- 1206 Traffic Lights
- 1209 Cola
- 1214 Fibonacci Coding
- 1216 Where's the Marble
- 1219 A Flea on a Chessboard
- 1221 Perfect Pth Powers
- 1224 Crazy Tea Party
- 1238 Border
- 1241 Factorial Frequencies
- 1243 Extrapolation Using a Difference Table
- 1246 Inventory Maintenance
- 1247 Perfection
- 1250 Hi-Q
- 1251 Polynomial Showdown
- 1254 Mapmaker
- 1257 Board Silly
- 1259 Equation Elation
- 1260 18-Wheeler Caravans (aka Semigroups) （数据与题目描述有差异，暂时不要做了，否则会 PE 至死...）
- 1261 Transferable Voting
- 1263 Crypto Columns
- 1268 Pushing Boxes
- 1271 Biker's Trip Odometer
- 1272 Candy Sharing Game
- 1280 Unreliable Message
- 1284 Molecular Formula
- 1291 Who's the Boss?
- 1302 Sum of Factorials
- 1305 A Contesting Decision
- 1309 Helping Florida
- 1312 Reserve Roman Notation
- 1318 Moving Tables
- 1321 Parencodings
- 1331 Deck
- 1334 Ratio
- 1338 Trees Made to Order
- 1357 Calling Extraterrestrial Intelligence Again
- 1365 Digital Product
- 1370 Candy
- 1374 Rain
- 1375 K-In-A-Row
- 1384 Palindrome Number
- 1386 Gossipers
- 1392 Easy Task
- 1401 Gigantic Sums
- 1403 Palindromes
- 1404 M*A*S*H
- 1408 Pi
- 1409 Up and Down Sequences
- 1410 Machined Surfaces
- 1413 Word Index
- 1415 Does This Make Me Look Fat?
- 1423 The Hardest Problem Ever
- 1425 Polar Explorer
- 1430 World's Worst Bus Schedule
- 1435 Integer Inquiry
- 1442 Lotto
- 1443 Matrix Chain Multiplication
- 1449 Equation Solver
- 1452 Tree Recovery
- 1453 Artificial Intelligence?
- 1456 Team Queue
- 1457 Error Correction
- 1458 France '98
- 1459 Goldbach's Conjecture
- 1462 Bee Maja
- 1471 Simple Computers
- 1474 How Many Fibs?
- 1477 All in All
- 1480 Diplomatic License
- 1481 Polygon Programming with Ease
- 1486 The Longest SubSequence
- 1489 ATDS （数据很弱，模拟即可过。但正确的做法是凸包 + 旋转卡壳）
- 1491 Good Approximation Problem
- 1492 Power Cable Problem
- 1504 Family Tree
- 1511 Average is not Fast Enough!
- 1512 Bound Found
- 1513 Code the Tree
- 1514 Decode the Tree
- 1518 Hard to Believe, but True!
- 1522 Edge
- 1526 Drink, on Ice
- 1527 Bean Counting
- 1528 Factoring Large Numbers
- 1529 Maze Traversal
- 1536 Substitution Cypher
- 1540 AutoFish
- 1545 Contest Scoreboard
- 1550 Pousse
- 1554 Request for Proposal
- 1555 Australian Voting
- 1557 The Trip （卡精度，输入上须做特殊处理）
- 1584 Hanoi Tower Troubles Again! （可以推出公式，但正确的做法是二分图最小路径覆盖）
- 1595 There's Treasure Everywhere!
- 1596 Video Surveillance
- 1599 Box of Bricks
- 1604 Cable Master
- 1612 The Tree Movers
- 1623 Blowing Fuses
- 1626 Programmer, Rank Thyself
- 1628 Magnificent Meatballs
- 1629 Safecracker
- 1631 Tanning Salon
- 1637 HangOver
- 1648 Booklets
- 1655 Yeehaa!
- 1657 Formula Racing
- 1674 Ball Toss
- 1685 Flow Layout
- 1688 Speed Limit
- 1696 No Brainer
- 1702 Team Rankings
- 1703 To and Fro
- 1716 Ride to School
- 1722 The Peanuts
- 1725 Argus
- 1730 The Separator in Grid
- 1732 Orders
- 1741 Magic Trick
- 1744 Grandpa is Famous
- 1746 Filling Out the Team
- 1757 Y2K Accounting Bug （貌似是 DP，但是工大数据较弱，模拟可以混过去）
- 1764 Soundex
- 1766 Dog & Gopher
- 1768 Mine Sweeper
- 1776 Steps
- 1788 Death to Binary?
- 1793 Inglish-Number Translator
- 1794 Japan Plotter Driver
- 1796 Hanafuda Shuffle
- 1802 The Balance （有数学解法）
- 1804 Leaky Cryptography
- 1813 Primary Arithmetic
- 1830 Bridge Hands
- 1832 Building a New Depot
- 1840 Kaleidoscope
- 1848 Jolly Jumpers
- 1850 Interpreter
- 1853 WERTYU
- 1863 整数的排序
- 1864 Fibonacci
- 1870 Race （可用 STL next_permutation 算法水过去，不过貌似有数学解法）
- 1871 整数的表示
- 1881 Ones
- 1882 All Integer Average
- 1888 The Counting Problem
- 1896 Average Speed
- 1905 Stack 'em Up
- 1930 Forests
- 1933 Election
- 1934 Nash Equilibrium
- 1937 Repeatless Numbers
- 1939 任务的分配
- 1944 方程题！！
- 1951 Beavergnaw
- 1955 Tic Tac Toe
- 1958 Faucet Flow
- 1959 Equations
- 1962 Above Average
- 1963 Time Zones
- 1967 Basic
- 1968 Rock, Scissors, Paper
- 1970 Persistent Numbers
- 1973 Guessing Game
- 1976 Calendar
- 1981 Inversion
- 1985 Super Calculator
- 1988 Drawing Rectangles
- 1997 Multiplying Matrices
- 1999 Data Manager
- 2009 Deduction
- 2011 Simple Problem
- 2012 Sort and Merge
- 2015 Crossed ladders
- 2017 Peter's smokes
- 2020 Chessboard in FEN
- 2026 Specialized Four-Digit Numbers
- 2028 Boundaries on 'A New Kind of Science'
- 2029 Rate of Return
- 2030 A Card Trick
- 2035 Center of Symmetry
- 2036 Polynomial Remains
- 2039 Grandpa's Rubik Cube
- 2043 Noise Effect
- 2045 Ambiguous permutations
- 2058 Diagonal Primes
- 2059 Encrypting in a Safe Way
- 2060 Fibonacci Problem Again
- 2065 Fibonacci Number
- 2066 Word Reversal
- 2069 Jimmy's Riddles
- 2071 Keep on Truckin'
- 2072 Blurred Vision
- 2075 Finding Nemo
- 2076 Series Determination
- 2080 Ferry Loading III
- 2081 Pick-up sticks
- 2082 Rock-Paper-Scissors Tournament
- 2088 Delta-wave
- 2089 4th point
- 2092 Gopher and hawks
- 2094 Common permutation
- 2098 Ultra-QuickSort
- 2100 Beat the Spread!
- 2101 Traditional BINGO
- 2102 Brownie Points I
- 2105 Bungee Jumping
- 2107 Crashing Robots
- 2111 Electrical Outlets
- 2115 Playground
- 2117 Long Division
- 2119 Acrophobic Cows
- 2121 War on Weather
- 2125 Prerequisites?
- 2127 Ball bearings
- 2129 Sylvester construction
- 2134 Hardware
- 2138 Jackpot
- 2142 Linear world
- 2151 Scrabble
- 2154 Dropping tests
- 2158 Do it!
- 2161 On Storing Clothes
- 2163 4 Values whose Sum is 0
- 2171 Rotate and Cut
- 2173 Interpreting Control Sequences
- 2174 Tornado!
- 2176 Pascal Library
- 2179 Where Are My Genes
- 2180 Computer DJ
- 2183 Extrusion
- 2191 Consecutive Digits in a Rational Number
- 2201 Sum of Cubes
- 2202 Bold ASCII Lines
- 2212 It's My Derivative
- 2213 The Game
- 2215 Dice Stacking
- 2217 The Happy Worm
- 2221 Ohgas' Fortune
- 2223 Numeral System
- 2232 Queens, Knights and Pawns
- 2251 Not Only Shops I
- 2260 GongZhu
- 2264 Standing
- 2266 Scientific counting method
- 2267 Alice and Bob
- 2277 Another Apples
- 2283 Emag eht htiw Em Pleh
- 2286 Help Me with the Game
- 2290 Laserbox
- 2293 Reduced ID Numbers
- 2296 Up the Stairs
- 2300 Dihedral groups
- 2302 Flavius Josephus Reloaded
- 2303 Wine trading in Gergovia
- 2304 Homogeneous squares
- 2309 Knights of the Round Table
- 2312 Gaus in Elementary School
- 2313 Kick-Tipp
- 2314 Stamps
- 2323 01000001
- 2324 The Bank of Kalii
- 2326 Kindergarten Graduation （直接构造）
- 2327 brainf*ck
- 2331 Sequence Sum Possibilities
- 2332 Ancient Keyboard
- 2333 Best SMS to Type
- 2334 Changing Phone Numbers
- 2335 Dramatic Multiplications
- 2343 Book Replacement
- 2352 Ferry Loading IV
- 2353 Card Hands （标准做法好像是 Trie 树）
- 2356 How many 0's?
- 2363 House Numbers
- 2364 Rotten Ropes
- 2368 A DP Problem
- 2371 9-18
- 2386 The Cow Lineup
- 2391 Aggressive cows
- 2395 WFF 'N PROOF
- 2398 Rectilinear polygon
- 2410 Make it Manhattan
- 2411 Quick Change
- 2412 Triangular Sums
- 2413 Shuffle'm Up
- 2422 Mahershalalhashbaz, Nebuchadnezzar, and Billy Bob Benjamin Go to the Regionals
- 2424 Plaque Pack
- 2428 An Introduction
- 2433 Full of Energy
- 2435 Helping the fish
- 2437 Quicksum
- 2438 Linear Pachinko
- 2439 Surprising Strings
- 2443 Root of the Problem
- 2450 Kickdown
- 2453 Nasty Hacks
- 2455 Card Trick （本人的做法比较 WS，笔算结果后直接打表 -_-b ）
- 2462 Easier Done Than Said?
- 2463 Colorville
- 2475 Simple Calendar
- 2476 Hurdles Race
- 2485 Myacm Triangles
- 2487 Loansome Car Buyer
- 2489 Robot Motion
- 2491 Fibonacci
- 2492 Football
- 2496 Tic-Tac-Toe
- 2497 Team Arrangement
- 2498 Barbara Bennett's Wild Numbers
- 2502 Chessboard Dance
- 2505 Kadj Squares
- 2516 Citystar
- 2519 Fake coin
- 2520 Little bailey I
- 2521 Little bailey II
- 2527 A simple problem
- 2528 1 2 and 3
- 2529 How Many Ways （需要了解计算机内二进制数的表示法）
- 2531 Accident I
- 2537 Kart
- 2540 Only One Boat （直接构造）
- 2541 Merry Christmas
- 2545 Just for Checksum
- 2546 The right time
- 2556 X-unappeared
- 2557 inflate
- 2562 Thanks giving Day
- 2564 Regional Ranklist
- 2567 Pell
- 2568 LFSR
- 2569 Next Number
- 2573 Life Game
- 2575 Divide
- 2578 Super_Stack
- 2579 Earn more!
- 2580 Divisibility
- 2585 Jogger
- 2588 Mispelling
- 2589 Conversions
- 2590 Encoding
- 2591 Decoding
- 2592 Flipping Burned Pancakes
- 2597 Savings Account
- 2598 Elementary Additions
- 2600 Coin Toss
- 2601 GPA
- 2602 Tree Grafting
- 2603 Look and Say
- 2607 Wavelet Compression
- 2616 Tower Parking
- 2619 Smeech
- 2623 An easy problem
- 2633 Puzzle I
- 2636 Puzzle II
- 2640 Have a Good Time
- 2641 Hidden Markov Model
- 2651 Pie
- 2654 Printer Queue
- 2659 My Favourite Code
- 2660 WORD
- 2661 Two Sides
- 2674 Ranking
- 2680 Cartesian Sum
- 2684 Cache
- 2689 Nail I
- 2691 Nail III （用 multiset 代替平衡树）
- 2694 Antimonotonicitye
- 2695 Humidex
- 2696 Tour de France
- 2699 Conformity
- 2709 Rectangular Polygons
- 2728 Antiarithmetic?
- 2729 One is an Interesting Number
- 2730 Verdis Quo
- 2734 Rout 66
- 2737 The Final Countdown
- ************
- * 贪心算法 *
- ************
- 1003 Mixing Milk
- 1052 Radar Installation
- 1062 数列极差问题
- 1065 Entropy
- 1096 Intervals
- 1225 Supermarket
- 1314 Wooden Sticks
- 1349 Gone Fishing
- 1913 Intervals
- 1941 超市收银问题
- 2051 Expedition
- 2143 Songs
- 2160 Bin Packing
- 2164 Keep the Customer Satisfied
- 2244 Get the Colors
- 2359 Yogurt factory
- 2490 Saruman's Army
- 2587 Change
- 2620 The Dragon of Loowater
- 2625 P=DP
- 2675 Stock
- 2677 Instruction Set
- ***************************************************************
- * 动态规划（包括线性 DP，环状 DP，树状 DP 以及状态压缩 DP 等）*
- ***************************************************************
- 1005 Fast Food
- 1031 Piggy-Bank
- 1042 I-KeyBoard
- 1058 Number Triangles
- 1061 Fat Cat's cousin II
- 1090 The Staircases
- 1141 Dividing up
- 1158 History Grading
- 1163 Unidirectional TSP
- 1181 Ugly Numbers
- 1192 Dollars
- 1215 Health Power
- 1227 Common Subsequence
- 1249 Optimal Array Multiplication Sequence
- 1264 Decorations
- 1277 Rhyme Schemes
- 1288 Bridging Signals
- 1297 Special Experiment
- 1316 Human Gene Functions
- 1400 Minimizing Maximizer （正确的做法是点树 + DP，但 HOJ 数据有误，DP 过不了，只能贪心）
- 1402 整数划分问题
- 1438 The Tower of Babylon
- 1444 Humble Numbers
- 1447 Compromise
- 1485 A Good Helper
- 1496 World Cup Noise
- 1525 Largest Rectangle in a Histogram
- 1537 Is Bigger Smarter?
- 1562 Tiling Up Blocks
- 1579 Chopsticks
- 1585 Euro Efficiency
- 1590 Pearls
- 1593 Triangles
- 1598 Always On the Run
- 1603 Brackets Sequence
- 1644 City Game
- 1680 One Person 'The Price is Right'
- 1697 Alphacode
- 1711 Investment
- 1733 Phone numbers
- 1738 Land Division Tax
- 1754 To Europe! To Europe!
- 1755 Test the Rods
- 1760 The jackpot
- 1780 Decoding Morse Sequences
- 1795 Ferry Loading
- 1839 Jack
- 1852 Tight Words
- 1893 Tian Ji -- The Horse Racing
- 1894 Islands and Bridges
- 1911 Polygon
- 1912 Density map
- 1936 Brackets
- 1942 OS进程调度
- 1965 Ferry Loading II
- 1977 Recaman's Sequence
- 1978 Terrible Sets
- 1987 Recursive Function
- 1990 Kids Grouping
- 1993 lykoo
- 2000 Maximum Submatrix
- 2014 Tiling
- 2023 Zipper
- 2024 Lenny's Lucky Lotto Lists
- 2044 Supermarket
- 2048 Decorate the wall
- 2056 Bookshelf
- 2067 Adding 1s, 2s, and 3s
- 2074 Exact Change Only
- 2085 Wavio Sequence
- 2091 Chess
- 2124 Tri Tiling
- 2139 Spiderman's workout （搜索也可以过，但要有好的剪枝）
- 2145 Tour
- 2148 Computer Transformation
- 2188 WordStack
- 2195 Pascal's Travels
- 2196 Job Scheduling by Open Bidding
- 2219 Mini Locomotive
- 2226 Cleaning Robot
- 2257 Sorting
- 2262 Spanning trees in a fan
- 2317 Pimp My Ride
- 2372 Recoup Traveling Expenses
- 2376 Chinese Word Segmentation
- 2406 The Bavarian Beer Party
- 2419 Margaritas on the River Walk
- 2421 Hie with the Pie
- 2473 Fish Can Fly
- 2481 Travel
- 2494 Spam
- 2500 Party at Hali-Bula （此题有多种解法）
- 2503 Bribing FIPA
- 2506 Print Words in Lines
- 2514 Perfect Service
- 2544 Leave an Increasing Sequence
- 2547 New Term （此题较综合，除状态压缩 DP 外还包含 Dijkstra 以及拓扑排序等算法，是道不错的题）
- 2555 Eating Watermelon
- 2558 maxsum
- 2559 prefix
- 2560 stamps
- 2566 Farmer
- 2572 Naive Robot
- 2574 Sales Promotion
- 2582 Game Dice
- 2583 Baking Cakes
- 2595 Tiling a Grid With Dominoes
- 2615 Obfuscation
- 2630 Training of Lord Fish's Fan I
- 2637 Calculate Similarity
- 2646 Isolated Word Recognition
- 2662 Pieces Assignment
- 2664 Taking Exercise
- 2665 Factory of XiaoE
- 2669 Dice Password Security
- 2698 Exchange Rates
- *****************************************************************
- * 搜索（包括简单递归，BFS，DFS 以及回溯 + 剪枝，迭代加深搜索等）*
- *****************************************************************
- 1018 Multiple
- 1022 Spacecraft Malfunction
- 1025 Skew Binary
- 1028 Secret Code
- 1030 Labyrinth
- 1044 Transportation
- 1049 Sticks
- 1053 Holedox Moving
- 1075 The Castle
- 1083 N-Credible Mazes
- 1097 Robot
- 1103 Cat and Mouse
- 1116 Alien Security
- 1121 Erdos Numbers
- 1134 Maze
- 1140 The Game
- 1149 T9
- 1175 Krypton Factor
- 1183 Street Numbers
- 1185 Bandwidth
- 1200 All Squares
- 1232 Jugs
- 1256 Run, Run, Runaround Numbers
- 1289 Vase Collection
- 1354 Forgetful
- 1361 Map of Ninja House
- 1412 LED Test
- 1422 Asteroids!
- 1440 Knight Moves
- 1448 Dungeon Master
- 1455 The Settlers of Catan
- 1465 Euro Cup 2000
- 1472 Mondriaan's Dream
- 1476 Hike on a Graph
- 1487 Fleet Commander
- 1488 TMD
- 1500 Strange Towers of Hanoi
- 1505 Push!!
- 1524 Genetic Code
- 1538 File Fragmentation
- 1547 FatMouse and Cheese
- 1574 Gift?!
- 1597 Pushing Boxes
- 1619 The Die Is Cast
- 1620 It's not a Bug, It's a Feature!
- 1639 Image Perimeters
- 1678 Knockout Tournament
- 1690 Relative Relatives
- 1692 Choose Your Own Adventure
- 1720 Pollution
- 1723 Finding Nemo
- 1736 A Game on the Chessboard
- 1797 Red and Black
- 1835 Paper Cutting
- 1892 The Rotation Game
- 1908 Party Lamps
- 1931 A Star not a Tree?
- 1949 Hay Points
- 1950 Jogging Trails
- 1956 Square
- 1957 Blocks
- 1974 Matrix
- 2004 Words Group
- 2013 Turn Over Turn Over
- 2022 Mersenne Composite Numbers
- 2027 Jill's Tour Paths
- 2040 This Sentence is False
- 2042 I hate SPAM, but some people love it
- 2049 Any fool can do it
- 2064 Journey to Tibet
- 2073 The Door/Key Problem
- 2087 Cube in Labyrinth
- 2095 Security Panel
- 2096 Roads in the North （求树的直径）
- 2120 Is It A Tree?
- 2123 Walk Through the Forest
- 2144 Sudoku
- 2157 RSI
- 2159 The mysterious X network
- 2166 Black Box
- 2172 Consecutive Ones
- 2177 ICPC Strikes Again
- 2190 Connect
- 2199 Sudoku
- 2205 Plinko （DP 也可做）
- 2208 Pegs
- 2230 Countdown
- 2238 Go
- 2240 Flipping colors
- 2254 Win or Lose
- 2256 The Game
- 2263 Sudoku
- 2298 Basic wall maze
- 2306 Tudoku （硬搞貌似也能过）
- 2308 Mine Map
- 2310 Honeymoon Hike
- 2315 A Knight's Journey
- 2325 The Cubic End
- 2336 Entertainment
- 2377 Triumvirate Canyon Interlocution
- 2400 Tautology
- 2414 Push Button Lock
- 2426 Snakes on a Plane
- 2434 Going to know him
- 2442 Go Go Gorelians
- 2459 Honeycomb Walk
- 2461 The Triangle Game
- 2464 Falling Leaves
- 2495 Sudoku
- 2504 Treasure of the Chimp Island
- 2510 Route Planning
- 2518 Holiday Gifts
- 2524 bailey's trouble II
- 2552 Filling Numbers
- 2581 Go
- 2604 Server Relocation
- 2612 Escape from Enemy Territory
- 2631 Training of Lord Fish's Fan II （此题有 DP 做法，具体方法请咨询 wywcgs 教主）
- 2643 Bi-image
- 2655 Prime Path
- 2658 Military Buildings
- 2666 Average Distance
- 2667 Bus Pass
- 2672 Pachinko
- 2703 Strange Billboard
- 2706 Key Task
- 2732 Another Brick in the Wall （此题还有其他做法）
- 2733 The Sidewinder Sleeps Tonite
- *************************************************
- * 数学（包括数论，组合数学，离散数学，博弈论等）*
- *************************************************
- 1004 Prime Palindromes
- 1006 Weird Clock
- 1008 How Many N
- 1013 Just The Facts
- 1014 Niven Numbers
- 1015 Nearly prime numbers
- 1016 Joseph's problem I
- 1017 Joseph's problem II
- 1039 Factorial
- 1069 Prime Land
- 1076 Ordered Fractions
- 1087 Self Numbers
- 1126 Smith Numbers
- 1155 国家利益
- 1156 The Cat in the Hat
- 1196 Power Crisis
- 1198 Permalex
- 1205 Factors and Factorials
- 1262 百万雄师过大江
- 1296 Big Number
- 1317 Flip and Shift
- 1348 Biorhythms
- 1356 Prime Judge
- 1367 A Stone Game
- 1391 Boastin' Red Socks
- 1441 Eeny Meeny Moo
- 1446 Binomial Showdown
- 1470 Let it Bead
- 1483 Paths on a Grid
- 1519 Assistance Required
- 1533 Fibonacci Numbers
- 1543 Dick and Jane
- 1552 Prime Distance
- 1560 Factovisors
- 1610 Twenty Questions
- 1649 Count on Canton
- 1669 In Danger
- 1761 Number Sequence
- 1769 Choose and Divide
- 1787 C Looooops
- 1827 The Clocks
- 1842 Raising Modulo Numbers
- 1866 猩猩点灯
- 1900 A Multiplication Game
- 1945 孔明棋
- 1953 Relatives
- 1960 Euclid's Game
- 1980 Game of Connections
- 1991 Happy 2005
- 1994 Monochromatic Triangles
- 1995 Venn Diagram
- 2010 GCD & LCM Inverse
- 2110 The Embarrassed Cryptographer
- 2116 Countable Numbers
- 2122 Factstone Benchmark
- 2153 Nim
- 2167 Ignore the Garbage
- 2204 Fibonacci Numbers
- 2253 Choices
- 2261 Coin changing
- 2276 Count prime
- 2282 Divisors
- 2305 Diophantus of Alexandria
- 2322 Incomplete chess boards
- 2342 Sum of Consecutive Prime Numbers
- 2373 Thieves Co. Ltd
- 2397 Semi-prime H-numbers
- 2416 Visible Lattice Points
- 2436 I love you
- 2467 Z-curve
- 2477 String's Puzzle
- 2515 Number tricks
- 2561 MaoLaoDa Number
- 2576 Simple Computing
- 2577 Simple Computing II
- 2593 Monkey Vines
- 2624 Triplets
- 2628 Fibonacci Convolution
- 2635 Weights
- 2647 Megaminx
- 2657 Leonardo's Notebook
- 2668 Cutting Banknotes
- 2700 Pseudoprime numbers
- 2708 Weird Numbers
- 2718 Smart Ray
- 2719 Tickets
- ************
- * 计算几何 *
- ************
- 1027 Equipment Box
- 1032 Lifting the Stone
- 1099 Lining Up
- 1143 Area
- 1188 Orchard Trees
- 1248 Intersecting Lines
- 1310 Three Sides Make a Triangle
- 1387 Billiard
- 1439 The Circumference of the Circle
- 1451 Globetrotter
- 1503 Lost in Space
- 1517 Global Roaming
- 1544 Leaps Tall Buildings
- 1587 Hansel and Grethel
- 1633 Transmitters
- 1707 Watchdog
- 1750 Line of Sight
- 1773 Airline Hub
- 1935 Triangle
- 2016 Conic Distance
- 2054 Stacking Cylinders
- 2155 Box walking
- 2203 Cover the Square
- 2258 Rotating
- 2328 Stacking Cylinders
- 2571 Triangle
- 2627 SVM
- 2639 Billiards
- 2721 Roll-A-Big-Ball
- ******************************************************************************
- * 字符串处理（包括最小表示法，中、后缀表达式转换、Trie 树或 STL map 的运用等 *
- ******************************************************************************
- 1081 Scramble Sort
- 1088 Do the Untwist
- 1089 Word Amalgamation
- 1110 Excuses, Excuses!
- 1132 Letter Sequence Analysis
- 1133 Mark-up
- 1191 ID Codes
- 1201 Ananagrams
- 1204 Word Crosses
- 1213 Path
- 1223 Hidden Password
- 1244 Evaluating Simple C Expressions
- 1307 Choose Your Words Carefully
- 1337 Web Navigation
- 1347 487-3279
- 1389 Election
- 1466 Friends
- 1468 HTML
- 1469 Anagram Groups
- 1515 Etaoin Shrdlu
- 1530 Compound Words
- 1548 Crypt Kicker II
- 1634 W's Cipher
- 1656 Magic Trick
- 1670 Run Length Encoding
- 1684 Symmetric Order
- 1880 Zipf's Law
- 1898 Babelfish
- 1929 Hardwood Species
- 1952 Power Strings
- 1989 The Most Frequent Word
- 2046 Bullshit Bingo
- 2057 Complicated Translation
- 2114 Necklace Decomposition
- 2149 Anagrammatic Distance
- 2181 Take Your Vitamins
- 2184 Pasting Strings
- 2189 Single Digit Adder
- 2206 Defining Moment
- 2241 Crabbles
- 2297 Automatic Correction of Misspellings
- 2318 Scavenger Hunt
- 2320 Rdeaalbe
- 2405 Digital Friends
- 2408 Decompression
- 2441 Frugal Search
- 2449 Java vs C++
- 2465 Instruens Fabulam
- 2488 Automatic Editing
- 2511 Shift Cipher
- 2525 bailey's trouble III
- 2551 Zoogle
- 2570 Inverted Files
- 2693 Open Source
- 2710 Reaus! Sham! Beaux!
- 2725 Help!
- ********* 图论 *********
- 无向图的割点、桥：
- 1007 SPF
- 1098 NetWork
- 1789 Electricity
- 2360 Redundant Paths
- 二分图匹配：
- 1021 Housing Complexes
- 1056 Machine Schedule
- 1086 Don't Get Rooked
- （暴搜也可以过）
- 1624 Sorting Slides
- 1708 Taxi Cab Scheme
- 1710 Card Game Cheater
- 1851 Gopher II
- 1859 Knights
- 2025 Going Home
- 2077 T-Shirt Gumbo
- 2295 Guardian of Decency
- 2349 Muddy Fields
- 2407 Evacuation
- 2472 IR-Lab2501 Against Mammoths
- 2542 Allocate Dormitories
- 欧拉（回）路：
- 1033 Play on Words
- 1045 John's trip
- 1426 Door Man
- 1903 Snow Clearing
- 1966 Catenyms
- 2021 Colored Sticks
- 拓扑排序：
- 1114 Frame Stacking
- 1170 Following Orders
- 1336 Sorting It All Out
- 1352 Mystery
- 1943
- 平面上的点
- 1992 Dependency Problems
- 2078 Window Pains
- 最小生成树（Prim, Kruskal）：
- //1614 Communication Planning for Phobos
- 1632 Jungle Roads
- 1658 Picnic Planning
- （度限制最小生成树，Prim + 贪心）
- 1751 Tangled in Cables
- 1811 Freckles
- 1833 Truck History
- 1961 Arctic Network
- 2162 Buy or Build
- 2507 The Bug Sensor Problem （POJ 加强了此题的数据，必须用 O(nlogn) 的 ”Voronoi
- 图求平面最小生成树“算法才可过）
- 最短路径（Bellman-Ford, Dijkstra, Floyd）：
- 1068 King （差分约束系统）
- //1113 Stockbroker Grapevine
- 1125 Railroad
- 1130 Galactic Import
- 1164 The Postal Worker Rings Once
- 1202 Route Finding
- 1211 HIT's Powerstation
- 1236 Domino Effect
- 1252 The Doors
- 1436 MPI Maelstrom
- 1437 Arbitrage
- 1450 Frogger
- 1460 Heavy Cargo
- 1464 From Dusk Till Dawn
- 1494 Hinge Node Problem
- 1516 Fiber Network
- 1565 The Geodetic Set Problem
- 1566 Cave Raider
- 1653 Heavy Transportation
- 1735 Sightseeing trip
- 1763 Fire Station
- 1948 回家
- 2041 Will Indiana Jones Get There?
- 2047 106 miles to Chicago
- 2062 Help the Hurricane Victims
- （求第二短路）
- 2218 Median Weight Bead
- 2486 Exchange Rates
- 2493 Robot
- 2534 Stone III
- 2727 Test
- 网络流：
- 1228 Power Network
- 1294 Sightseeing Tour
- 1345 A Plug for UNIX
- 2543 Stone IV
- 2609 March of the Penguins
- 2634 How to earn more
- 2713 Matrix1
- 2716 xiaoE's Sweet Game
- 2717 Take Bus to The Nest
- 染色问题：
- 1115 Channel Allocation
- 1266 Phone Home
- 2055 Astonishing Movie Plan
- 邻接阵的幂的意义及运用：
- 1171 Numbering Paths
- 1617 Acceptable Strings
- 树的同构判定：
- 1292 Subway Tree Systems
- 2-SAT:
- 1917 Peaceful Commission
- 2632 Blanks in a Table
- 比赛图：
- 1303 Task Sequences
- 顶点的度的灵活运用：
- 2420 Caterpillar
- 求生成树的个数：
- 2535 Spanning Tree I
- 2536 Spanning Tree II
