-----------------------------最优化问题-------------------------------------
----------------------常规动态规划
SOJ1162 I-Keyboard
SOJ1685 Chopsticks
SOJ1679 Gangsters
SOJ2096 Maximum Submatrix
SOJ2111 littleken bg
SOJ2142 Cow Exhibition
SOJ2505 The County Fair
SOJ2818 QQ音速
SOJ2469 Exploring Pyramids
SOJ1833 Base Numbers
SOJ2009 Zeros and Ones
SOJ2032 The Lost House
SOJ2113 数字游戏
SOJ2289 A decorative fence
SOJ2494 Appleland
SOJ2440 The days in fzk
SOJ2494 Appleland
SOJ2515 Ski Lift
SOJ2718 Bookshelf
SOJ2722 Treats for the Cows
SOJ2726 Deck of Cards
SOJ2729 Space Elevator
SOJ2730 Lazy Cows
SOJ2713 Cut the Sequence
SOJ2768 Bomb
SOJ2779 Find the max (I) (最大M子段和问题)
SOJ2796 Letter Deletion
SOJ2800 三角形
SOJ2804 Longest Ordered Subsequence (II)
SOJ2848 River Hopscotch(二分)
SOJ2849 Cow Roller Coaster
SOJ2886 Cow Walk
SOJ2896 Alphacode
SOJ2939 bailey's trouble
SOJ2994 RSI
SOJ3037 Painting the balls
SOJ3072 Computers
SOJ3078 windy's "K-Monotonic"
SOJ3084 windy's cake IV
SOJ3104 Game(注意大数运算，高精度)
SOJ3110 k Cover of Line
SOJ3111 k Median of Line
SOJ3123 Telephone Wire
SOJ3142 Unfriendly Multi Permutation
SOJ3213 Pebbles
SOJ3219 Cover Up
SOJ3263 Function
SOJ3264 Evil Game
SOJ3339 graze2
SOJ3341 Ski
SOJ3352 The Baric Bovine
SOJ3503 Banana Boxes
SOJ3633 Matches's Game
SOJ3636 理想的正方形
SOJ3711 Mountain Road
SOJ3723 Robotic Invasion
nankai1134 Relation Ordering
srm150--div1--500
----------------背包问题
SOJ2222 Health Power
SOJ2749 The Fewest Coins
SOJ2785 Binary Partitions
SOJ2930 积木城堡
SOJ3172 Fisherman
SOJ3300 Stockholm Coins
SOJ3360 Buying Hay
SOJ3531 Number Pyramids
----------------状态DP
SOJ2089 lykoo
SOJ2768 Bomb
SOJ2819 Ader
SOJ2842 The TSP problem
SOJ3025 Artillery(状态DP)
SOJ3088 windy's cake VIII
SOJ3183 Fgjlwj's boxes
SOJ3259 Counting numbers
SOJ3262 Square Fields(二分+状态DP)
SOJ3371 Mixed Up Cows
SOJ3631 Shopping Offers
----------------树状DP
SOJ 1870 Rebuilding Roads
SOJ 2136 Apple(树形依赖背包n*C算法)
SOJ 2514 Milk Team Select
SOJ 2199 Apple Tree
SOJ 3295 Treeland Exhibition
SOJ 3635 World Cup 2010
hdoj1561 The more, The Better
PKU1655 Balancing Act
PKU3107 Godfather
PKU3345 Bribing FIPA
PKU2378 Tree Cutting
PKU3140 Contestants Division
PKU3659 Cell Phone Network
---------------配合数据结构的优化DP
SOJ 2702 Alanna
SOJ 2978 Tasks
SOJ 3234 Finding Seats
SOJ 3540 股票交易
-------------- 斜率优化
SOJ 3710 特别行动队
SOJ 3734 搬家
SOJ 3736 Lawrence of Arabia
---------------四边形不等式
SOJ 1702 Cutting Sticks
SOJ 2775 Breaking Strings
--------------- 最优化之排序
(思考两个元素之间的先后关系，以此得出一个二元比较关系，并验证此关系可传递,反对称，进而排序)
SOJ2509 The Milk Queue
SOJ2547 cards
SOJ2850 Protecting the Flowers
SOJ2957 Setting Problems
SOJ3167 Computer
SOJ3331 Cards(2547加强版)
SOJ3327 Dahema's Computer(通过此题学会排序)
-----------------最优化之必要条件枚举
(思考最优解所具有的性质，得出最优解的一个强必要条件，在此基础上枚举）
SOJ3317 FGJ's Plane
SOJ3429 Food portion sizes
--------------------------------贪心---------------------------------------
SOJ1078 BlueEyes' Schedule
SOJ1203 Pass-Muraille
SOJ1673 Gone Fishing
SOJ2574 pie
SOJ2645 Buy One Get One Free
SOJ2701 In a Cycle
SOJ2876 Antimonotonicity(经典模型 O(n)算法)
SOJ3343 Tower
--------------------------------搜索---------------------------------------
SOJ1106 DWeep
SOJ1626 square
SOJ2061 8 puzzle
SOJ2485 Sudoku
SOJ1045 Sticks
SOJ2736 Fliptile
SOJ2771 Collecting Stones
SOJ2715 Maze Break
SOJ2518 Magic Cow Shoes
SOJ2829 binary strings(双向BFS)
SOJ3005 Dropping the stones
SOJ3136 scu07t01的迷宫(BFS预处理 然后枚举交汇点)
SOJ3330 Windy's Matrix(BFS)
--------------------------------DFA----------------------------------------
---------------状态矩阵
SOJ1826 Number Sequence
SOJ1936 Firepersons
SOJ2552 Number of Tilings
SOJ2919 Matrix Power Series (学习矩阵的快速乘法从此开始)
SOJ2920 Magic Bean
SOJ3021 Quad Tiling
SOJ3046 Odd Loving Bakers
SOJ3176 E-string
SOJ3246 Tiling a Grid With Dominoes
SOJ3323 K-Satisfied Numbers
SOJ3337 Wqb's Word
----------------DFA+DP
SOJ1112 Repeatless Numbers(DFA+二分)
SOJ2913 Number Substring
SOJ2826 Apocalypse Someday
SOJ3128 windy和水星 -- 水星数学家 1
SOJ3182 Windy numbers
---------------------------------图论---------------------------------------
--------------------最短路
SOJ1697 Cashier Employment
SOJ2325 Word Transformation
SOJ2427 Daizi's path system
SOJ2468 Catcus
SOJ2751 Wormholes(SPFA判断负圈回路的存在性)
SOJ2932 道路
SOJ3160 Clear And Present Danger
SOJ3335 Windy's Route(最短路径的分层图思想)
SOJ3346 Best Spot(N^3放心的写)
SOJ3423 Revamping Trails
---------------------查分约束
SOJ1687 Intervals
---------------------最小生成树
SOJ1169 Networking
SOJ2198 Highways
SOJ3366 Watering Hole
SOJ3427 Dark roads
---------------------强连通分支
SOJ2832 Mars city
---------------------2-SAT
SOJ3535 Colorful Decoration
HDU3062 Party
---------------------拓扑排序
SOJ1075 BlueEyes and Apples (II)
---------------------无向连通图上的割点和割边问题
SOJ1935 Electricity
WHU145 Railway
---------------------二分图的匹配
------------------最大匹配
SOJ1183 Girls and Boys
SOJ1186 Courses
SOJ2035 The Tiling Problem
SOJ2077 Machine Schedule
SOJ2160 Optimal Milking
SOJ2342 Rectangles(Beloved Sons 模型)
SOJ2472 Guardian of Decency
SOJ2681 平方数 2
SOJ2737 Asteroids
SOJ2764 Link-up Game
SOJ2806 LED Display
SOJ2958 Weird Fence
SOJ3043 Minimum Cost
SOJ3038 Beloved Sons（简单贪心一下）
SOJ3453 Stock Charts
ZOJ3265 Strange Game
---------------最佳匹配
SOJ1981 Going Home
WHU1451 Special Fish
---------------------最近公共祖先问题
SOJ1187 Closest Common Ancestors
SOJ1677 How far away
SOJ3023 Network
SOJ3098 Bond
---------------------其他
SOJ3013 tree
SOJ3056 Average distance(树上的DFS)
---------------------------------网络流-------------------------------------
---------------------最大流
POJ 1273 Drainage Ditches
POJ 1274 The Perfect Stall (二分图匹配)
POJ 1698 Alice's Chance
POJ 1459 Power Network
POJ 2112 Optimal Milking (二分)
POJ 2455 Secret Milking Machine (二分)
POJ 3189 Steady Cow Assignment (枚举)
POJ 1637 Sightseeing tour (混合图欧拉回路)
POJ 3498 March of the Penguins (枚举汇点)
POJ 1087 A Plug for UNIX
POJ 1149 Pigs (构图题)
ZOJ 2760 How Many Shortest Path (边不相交最短路的条数)
POJ 2391 Ombrophobic Bovines (必须拆点，否则有BUG)
WHU 1124 Football Coach (构图题)
SGU 326 Perspective (构图题，类似于 WHU 1124)
UVa 563 Crimewave
UVa 820 Internet Bandwidth
POJ 3281 Dining (构图题)
POJ 3436 ACM Computer Factory
POJ 2289 Jamie's Contact Groups (二分)
SGU 438 The Glorious Karlutka River =) (按时间拆点)
SGU 242 Student's Morning (输出一组解)
SGU 185 Two shortest (Dijkstra 预处理，两次增广，必须用邻接阵实现，否则 MLE)
HOJ 2816 Power Line
POJ 2699 The Maximum Number of Strong Kings (枚举+构图)
ZOJ 2332 Gems
JOJ 2453 Candy (构图题)
SOJ 2414 Leapin' Lizards
SOJ 2835 Pick Up Points
SOJ 3312 Stockholm Knights
SOJ 3353 Total Flow
--------------------最小割
SOJ2662 Playground
SOJ3106 Dual Core CPU
SOJ3109 Space flight
SOJ3107 Select
SOJ3185 Black and white
SOJ3254 Rain and Fgj
SOJ3134 windy和水星 -- 水星交通
HOJ 2634 How to earn more
ZOJ 2071 Technology Trader (找割边)
HNU 10940 Coconuts
ZOJ 2532 Internship (找关键割边)
POJ 1815 Friendship (字典序最小的点割集)
POJ 3204 Ikki's Story I - Road Reconstruction (找关键割边)
POJ 3308 Paratroopers
POJ 3084 Panic Room
POJ 3469 Dual Core CPU
ZOJ 2587 Unique Attack (最小割的唯一性判定)
POJ 2125 Destroying The Graph (找割边)
ZOJ 2539 Energy Minimization
ZOJ 2930 The Worst Schedule
TJU 2944 Mussy Paper (最大权闭合子图)
POJ 1966 Cable TV Network (无向图点连通度)
HDU 1565 方格取数(1) (最大点权独立集)
HDU 1569 方格取数(2) (最大点权独立集)
HDU 3046 Pleasant sheep and big big wolf
POJ 2987 Firing (最大权闭合子图)
SPOJ 839 Optimal Marks (将异或操作转化为对每一位求最小割)
HOJ 2811 Earthquake Damage (最小点割集)
2008 Beijing Regional Contest Problem A Destroying the bus stations ( BFS 预处理 )(
http://acmicpc-live-archive.uva.es/nuevoportal/data/problem.php?p=4322)
ZOJ 2676 Network Wars (参数搜索)
POJ 3155 Hard Life (参数搜索)
ZOJ 3241 Being a Hero
-----------------有上下界
ZOJ 2314 Reactor Cooling (无源汇可行流)
POJ 2396 Budget (有源汇可行流)
SGU 176 Flow Construction (有源汇最小流)
ZOJ 3229 Shoot the Bullet (有源汇最大流)
HDU 3157 Crazy Circuits (有源汇最小流)
-----------------最小费用流
HOJ 2715 Matrix3
HOJ 2739 The Chinese Postman Problem
POJ 2175 Evacuation Plan (消一次负圈)
POJ 3422 Kaka's Matrix Travels (与 Matrix3 类似)
POJ 2516 Minimum Cost (按物品种类多次建图)
POJ 2195 Going Home
POJ 3762 The Bonus Salary!
BUAA 1032 Destroying a Painting
POJ 2400 Supervisor, Supervisee (输出所有最小权匹配)
POJ 3680 Intervals
HOJ 2543 Stone IV
POJ 2135 Farm Tour
SOJ 3186 Segments
SOJ 2927 终极情报网
SOJ 3634 星际竞速
HDU 3376 Matrix Again
-----------------------------------数据结构---------------------------------
-----------------------------------基础数据结构
----------------------栈
SOJ2511 Moooo
SOJ3085 windy's cake V(经典 栈与单调性的结合)
SOJ3279 hm 与 zx 的故事系列2
SOJ3329 Maximum Submatrix II(转化为上面两题的模型)
---------------------双端队列
SOJ2978 Tasks
SOJ3139 Sliding Window(双端队列最经典的应用)
SOJ3636 理想的正方形
-------------------- --------------高级数据结构
---------------------线段树
SOJ1862 Choice Pears
SOJ2057 The manager's worry
SOJ2249 Mayor's posters
SOJ2309 In the Army Now
SOJ2436 Picture puzzle game
SOJ2556 Find the Permutation
SOJ2562 The End of Corruption
SOJ2719 Corral the Cows(线段树+二分)
SOJ2740 Balanced Lineup
SOJ2745 零序列
SOJ2776 Matrix Searching
SOJ2808 Thermal Death of the Universe
SOJ2822 Buy Tickets
SOJ2937 Tetris
SOJ2938 Apple Tree(先DFS获得欧拉序列)
SOJ2965 capitally players
SOJ2968 Matrix(二维线段树)
SOJ3019 Count Color
SOJ3022 Difference Is Beautiful( RMQ+二分 经典模型)
SOJ3086 windy's cake VI(二维线段树)
SOJ3099 A Simple Problem with Integers
SOJ3248 Mousetrap
SOJ3321 Windy's Sequence II
SOJ3370 Light Switching
SOJ3640 Special Subsequence
---------------------树状数组
SOJ2309 In the Army Now
---------------------归并排序思想
SOJ2906 Ultra-QuickSort
SOJ2431 Cows distribute food(利用归并排序求逆序数：nlogn)
SOJ2497 Number sequence
SOJ2559 What is the Rank?
SOJ2728 MooFest
SOJ3009 Stones for Amy
SOJ3010 K-th Number
SOJ3147 K-th number
---------------------并查集
SOJ1824 The Suspects
SOJ1953 key
SOJ2245 Ubiquitous Religions
SOJ2389 Journey to Tibet
SOJ2438 Pet
SOJ2490 Math teacher's test
POJ2832 How many pairs?
POJ2821 Auto-Calculation Machine
SOJ2979 食物链
SOJ3282 Kingdom of Heaven
SOJ3417 Skyscrapers
------------------------块状链表
SOJ3032 Big String
SOJ3035 反转序列
----------------------------------- 字符串
---------------------后缀数组
SOJ1948 sekretarka
SOJ3045 Long Long Message
SOJ3075 回文子串
SOJ3296 Windy's S
---------------------KMP
SOJ2652 Oulipo
SOJ2307 String Matching
SOJ3014 Seek the Name, Seek the Fame
SOJ3596 Article Decryption
--------------------trie树
SOJ3076 相同字符串
SOJ3336 Diary
SOJ3596 Article Decryption
---------------------------------组合数学及数论-----------------------------
SOJ1839 Relatives(Euler函数)
SOJ1942 Foto
SOJ2714 Mountains (II)
SOJ2668 C(n,k)
SOJ2666 分解 n!
SOJ2106 GCD & LCM Inverse
SOJ2498 Count prime
SOJ2238 Let it Bead(置换群-polya定理的应用)
SOJ2924 完美交换（置换群）
SOJ2638 Cow Sorting（置换群）
-------------费马小定理
SOJ 3578 H1N1's Problem
--------------------------容斥原理
SOJ3191 Free square
SOJ3082 windy's cake II
SOJ3502 The Almost Lucky Numbers
SOJ3547 Coprime
----------------------------------博弈论------------------------------------
SOJ1128 控 制 棋
SOJ1866 Games(诡异的博弈)
SOJ2197 A Funny Game
SOJ2188 A multiplication game
SOJ2403 Black and white chess
SOJ2477 Simple Game
SOJ2687 草稿纸 2
SOJ2688 草稿纸 3
SOJ2836 Pick Up Points II
SOJ2845 Jange
SOJ2922 A New Tetris Game
SOJ2993 Nim
SOJ3066 John
SOJ3132 windy和水星 -- 水星游戏 1
SOJ3133 windy和水星 -- 水星游戏 2
SOJ3174 Good game
SOJ3307 Stockholm Game
SOJ3446 Nim or not Nim
SOJ3461 Nim-k
SOJ3463 Ordered Nim
SOJ3468 Flip Coins
SOJ3548 game
SOJ3584 Baihacker and Oml
-----------------------------------编译原理---------------------------------
1016 Tree Summing
1038 Trees on the level
1047 FORCAL
1663 (Your)((Term)((Project)))
1672 Trees Made to Order
1795 HTML
1864 Binary Trees' Order
1901 Boolean Expresions
2230 Calculator
2441 24 dot
2570 算法复杂度
2697 Expression
2792 Syntax Tree
3089 windy's cake IX
2334 Decoding
1978: Zipper
2883 Tautology
3489 Lambda-Calculus
3490 Type Derivation
1695 Lazy Math Instructor
1788 Friends
2352 Molecular Formula
2004: SHEET
2255: Any fool can do it
2457 brainfck
3546 Calculator
1646 乘方表达式显示
-----------------------------------计算几何---------------------------------
soj 1041: Pipe 黑书上的题目
soj 1138: Wall 凸包入门
soj 1166: Art Gallery 求核面积
soj 1171: Area 2 多边形面积，皮克定理
soj 1333: EXOCENTER OF A TRIANGLE 求三角形垂心
soj 1669: Space Ant 深刻理解叉积含义，类似于卷包裹法
soj 1893: Line of Sight 线段相交的判断 + 贪心，注意非法数据
soj 1916: Circle and Points 枚举
soj 2003: TOYS 核心是判断一个点是否在四边形内部
soj 2120: Triangle n个点选出三个点能组成三角形的最大面积，凸包+旋转卡壳
soj 2190: Treasure Hunt 问题转化 + 枚举
soj 2211: Conic distance 余弦定理
soj 2233: Model Rocket Height 平行四边形的性质
soj 2345: Pick-up Sticks 枚举+线段相交判断
soj 2460: Model Rocket Height 求三维坐标中两条射线间距离的中点的高度
soj 2474: Chaffy dish 判断线段与圆的位置关系
soj 2581: How I Mathematician Wonder What You Are 星型多边形求核，半平面相交
soj 2748: 直线与点 枚举
soj 2789: Segments 枚举
soj 2879: Texas Trip 求包含所有点的最小面积的正方形的面积 二次迭代或者三分都行
soj 2881: Rectilinear polygon 注意读题，另外soj数据较弱，没有自交情况
soj 3245: Model Rocket Height 正弦定理
soj 3257: Common area 判断两个多边形是否有公共面积
soj 3445: Convex Hull 求凸包的逆时针排序输入，主要考共线点的处理，方法见黑书P396，另数据较弱，其他很多方法是水过去的
soj 3487: Convex Hull of Lattice Points 凸包
soj 3585: BigCircle and BigSquare 判断圆与正方形是否相交，注意极端情况
soj 3684: Triangle Counting 求给出的n个点能组成的三角形中完全包含原点的个数
SOJ1162 I-Keyboard
SOJ1685 Chopsticks
SOJ1679 Gangsters
SOJ2096 Maximum Submatrix
SOJ2111 littleken bg
SOJ2142 Cow Exhibition
SOJ2505 The County Fair
SOJ2818 QQ音速
SOJ2469 Exploring Pyramids
SOJ1833 Base Numbers
SOJ2009 Zeros and Ones
SOJ2032 The Lost House
SOJ2113 数字游戏
SOJ2289 A decorative fence
SOJ2494 Appleland
SOJ2440 The days in fzk
SOJ2494 Appleland
SOJ2515 Ski Lift
SOJ2718 Bookshelf
SOJ2722 Treats for the Cows
SOJ2726 Deck of Cards
SOJ2729 Space Elevator
SOJ2730 Lazy Cows
SOJ2713 Cut the Sequence
SOJ2768 Bomb
SOJ2779 Find the max (I) (最大M子段和问题)
SOJ2796 Letter Deletion
SOJ2800 三角形
SOJ2804 Longest Ordered Subsequence (II)
SOJ2848 River Hopscotch(二分)
SOJ2849 Cow Roller Coaster
SOJ2886 Cow Walk
SOJ2896 Alphacode
SOJ2939 bailey's trouble
SOJ2994 RSI
SOJ3037 Painting the balls
SOJ3072 Computers
SOJ3078 windy's "K-Monotonic"
SOJ3084 windy's cake IV
SOJ3104 Game(注意大数运算，高精度)
SOJ3110 k Cover of Line
SOJ3111 k Median of Line
SOJ3123 Telephone Wire
SOJ3142 Unfriendly Multi Permutation
SOJ3213 Pebbles
SOJ3219 Cover Up
SOJ3263 Function
SOJ3264 Evil Game
SOJ3339 graze2
SOJ3341 Ski
SOJ3352 The Baric Bovine
SOJ3503 Banana Boxes
SOJ3633 Matches's Game
SOJ3636 理想的正方形
SOJ3711 Mountain Road
SOJ3723 Robotic Invasion
nankai1134 Relation Ordering
srm150--div1--500
----------------背包问题
SOJ2222 Health Power
SOJ2749 The Fewest Coins
SOJ2785 Binary Partitions
SOJ2930 积木城堡
SOJ3172 Fisherman
SOJ3300 Stockholm Coins
SOJ3360 Buying Hay
SOJ3531 Number Pyramids
----------------状态DP
SOJ2089 lykoo
SOJ2768 Bomb
SOJ2819 Ader
SOJ2842 The TSP problem
SOJ3025 Artillery(状态DP)
SOJ3088 windy's cake VIII
SOJ3183 Fgjlwj's boxes
SOJ3259 Counting numbers
SOJ3262 Square Fields(二分+状态DP)
SOJ3371 Mixed Up Cows
SOJ3631 Shopping Offers
----------------树状DP
SOJ 1870 Rebuilding Roads
SOJ 2136 Apple(树形依赖背包n*C算法)
SOJ 2514 Milk Team Select
SOJ 2199 Apple Tree
SOJ 3295 Treeland Exhibition
SOJ 3635 World Cup 2010
hdoj1561 The more, The Better
PKU1655 Balancing Act
PKU3107 Godfather
PKU3345 Bribing FIPA
PKU2378 Tree Cutting
PKU3140 Contestants Division
PKU3659 Cell Phone Network
---------------配合数据结构的优化DP
SOJ 2702 Alanna
SOJ 2978 Tasks
SOJ 3234 Finding Seats
SOJ 3540 股票交易
-------------- 斜率优化
SOJ 3710 特别行动队
SOJ 3734 搬家
SOJ 3736 Lawrence of Arabia
---------------四边形不等式
SOJ 1702 Cutting Sticks
SOJ 2775 Breaking Strings
--------------- 最优化之排序
(思考两个元素之间的先后关系，以此得出一个二元比较关系，并验证此关系可传递,反对称，进而排序)
SOJ2509 The Milk Queue
SOJ2547 cards
SOJ2850 Protecting the Flowers
SOJ2957 Setting Problems
SOJ3167 Computer
SOJ3331 Cards(2547加强版)
SOJ3327 Dahema's Computer(通过此题学会排序)
-----------------最优化之必要条件枚举
(思考最优解所具有的性质，得出最优解的一个强必要条件，在此基础上枚举）
SOJ3317 FGJ's Plane
SOJ3429 Food portion sizes
--------------------------------贪心---------------------------------------
SOJ1078 BlueEyes' Schedule
SOJ1203 Pass-Muraille
SOJ1673 Gone Fishing
SOJ2574 pie
SOJ2645 Buy One Get One Free
SOJ2701 In a Cycle
SOJ2876 Antimonotonicity(经典模型 O(n)算法)
SOJ3343 Tower
--------------------------------搜索---------------------------------------
SOJ1106 DWeep
SOJ1626 square
SOJ2061 8 puzzle
SOJ2485 Sudoku
SOJ1045 Sticks
SOJ2736 Fliptile
SOJ2771 Collecting Stones
SOJ2715 Maze Break
SOJ2518 Magic Cow Shoes
SOJ2829 binary strings(双向BFS)
SOJ3005 Dropping the stones
SOJ3136 scu07t01的迷宫(BFS预处理 然后枚举交汇点)
SOJ3330 Windy's Matrix(BFS)
--------------------------------DFA----------------------------------------
---------------状态矩阵
SOJ1826 Number Sequence
SOJ1936 Firepersons
SOJ2552 Number of Tilings
SOJ2919 Matrix Power Series (学习矩阵的快速乘法从此开始)
SOJ2920 Magic Bean
SOJ3021 Quad Tiling
SOJ3046 Odd Loving Bakers
SOJ3176 E-string
SOJ3246 Tiling a Grid With Dominoes
SOJ3323 K-Satisfied Numbers
SOJ3337 Wqb's Word
----------------DFA+DP
SOJ1112 Repeatless Numbers(DFA+二分)
SOJ2913 Number Substring
SOJ2826 Apocalypse Someday
SOJ3128 windy和水星 -- 水星数学家 1
SOJ3182 Windy numbers
---------------------------------图论---------------------------------------
--------------------最短路
SOJ1697 Cashier Employment
SOJ2325 Word Transformation
SOJ2427 Daizi's path system
SOJ2468 Catcus
SOJ2751 Wormholes(SPFA判断负圈回路的存在性)
SOJ2932 道路
SOJ3160 Clear And Present Danger
SOJ3335 Windy's Route(最短路径的分层图思想)
SOJ3346 Best Spot(N^3放心的写)
SOJ3423 Revamping Trails
---------------------查分约束
SOJ1687 Intervals
---------------------最小生成树
SOJ1169 Networking
SOJ2198 Highways
SOJ3366 Watering Hole
SOJ3427 Dark roads
---------------------强连通分支
SOJ2832 Mars city
---------------------2-SAT
SOJ3535 Colorful Decoration
HDU3062 Party
---------------------拓扑排序
SOJ1075 BlueEyes and Apples (II)
---------------------无向连通图上的割点和割边问题
SOJ1935 Electricity
WHU145 Railway
---------------------二分图的匹配
------------------最大匹配
SOJ1183 Girls and Boys
SOJ1186 Courses
SOJ2035 The Tiling Problem
SOJ2077 Machine Schedule
SOJ2160 Optimal Milking
SOJ2342 Rectangles(Beloved Sons 模型)
SOJ2472 Guardian of Decency
SOJ2681 平方数 2
SOJ2737 Asteroids
SOJ2764 Link-up Game
SOJ2806 LED Display
SOJ2958 Weird Fence
SOJ3043 Minimum Cost
SOJ3038 Beloved Sons（简单贪心一下）
SOJ3453 Stock Charts
ZOJ3265 Strange Game
---------------最佳匹配
SOJ1981 Going Home
WHU1451 Special Fish
---------------------最近公共祖先问题
SOJ1187 Closest Common Ancestors
SOJ1677 How far away
SOJ3023 Network
SOJ3098 Bond
---------------------其他
SOJ3013 tree
SOJ3056 Average distance(树上的DFS)
---------------------------------网络流-------------------------------------
---------------------最大流
POJ 1273 Drainage Ditches
POJ 1274 The Perfect Stall (二分图匹配)
POJ 1698 Alice's Chance
POJ 1459 Power Network
POJ 2112 Optimal Milking (二分)
POJ 2455 Secret Milking Machine (二分)
POJ 3189 Steady Cow Assignment (枚举)
POJ 1637 Sightseeing tour (混合图欧拉回路)
POJ 3498 March of the Penguins (枚举汇点)
POJ 1087 A Plug for UNIX
POJ 1149 Pigs (构图题)
ZOJ 2760 How Many Shortest Path (边不相交最短路的条数)
POJ 2391 Ombrophobic Bovines (必须拆点，否则有BUG)
WHU 1124 Football Coach (构图题)
SGU 326 Perspective (构图题，类似于 WHU 1124)
UVa 563 Crimewave
UVa 820 Internet Bandwidth
POJ 3281 Dining (构图题)
POJ 3436 ACM Computer Factory
POJ 2289 Jamie's Contact Groups (二分)
SGU 438 The Glorious Karlutka River =) (按时间拆点)
SGU 242 Student's Morning (输出一组解)
SGU 185 Two shortest (Dijkstra 预处理，两次增广，必须用邻接阵实现，否则 MLE)
HOJ 2816 Power Line
POJ 2699 The Maximum Number of Strong Kings (枚举+构图)
ZOJ 2332 Gems
JOJ 2453 Candy (构图题)
SOJ 2414 Leapin' Lizards
SOJ 2835 Pick Up Points
SOJ 3312 Stockholm Knights
SOJ 3353 Total Flow
--------------------最小割
SOJ2662 Playground
SOJ3106 Dual Core CPU
SOJ3109 Space flight
SOJ3107 Select
SOJ3185 Black and white
SOJ3254 Rain and Fgj
SOJ3134 windy和水星 -- 水星交通
HOJ 2634 How to earn more
ZOJ 2071 Technology Trader (找割边)
HNU 10940 Coconuts
ZOJ 2532 Internship (找关键割边)
POJ 1815 Friendship (字典序最小的点割集)
POJ 3204 Ikki's Story I - Road Reconstruction (找关键割边)
POJ 3308 Paratroopers
POJ 3084 Panic Room
POJ 3469 Dual Core CPU
ZOJ 2587 Unique Attack (最小割的唯一性判定)
POJ 2125 Destroying The Graph (找割边)
ZOJ 2539 Energy Minimization
ZOJ 2930 The Worst Schedule
TJU 2944 Mussy Paper (最大权闭合子图)
POJ 1966 Cable TV Network (无向图点连通度)
HDU 1565 方格取数(1) (最大点权独立集)
HDU 1569 方格取数(2) (最大点权独立集)
HDU 3046 Pleasant sheep and big big wolf
POJ 2987 Firing (最大权闭合子图)
SPOJ 839 Optimal Marks (将异或操作转化为对每一位求最小割)
HOJ 2811 Earthquake Damage (最小点割集)
2008 Beijing Regional Contest Problem A Destroying the bus stations ( BFS 预处理 )(
http://acmicpc-live-archive.uva.es/nuevoportal/data/problem.php?p=4322) ZOJ 2676 Network Wars (参数搜索)
POJ 3155 Hard Life (参数搜索)
ZOJ 3241 Being a Hero
-----------------有上下界
ZOJ 2314 Reactor Cooling (无源汇可行流)
POJ 2396 Budget (有源汇可行流)
SGU 176 Flow Construction (有源汇最小流)
ZOJ 3229 Shoot the Bullet (有源汇最大流)
HDU 3157 Crazy Circuits (有源汇最小流)
-----------------最小费用流
HOJ 2715 Matrix3
HOJ 2739 The Chinese Postman Problem
POJ 2175 Evacuation Plan (消一次负圈)
POJ 3422 Kaka's Matrix Travels (与 Matrix3 类似)
POJ 2516 Minimum Cost (按物品种类多次建图)
POJ 2195 Going Home
POJ 3762 The Bonus Salary!
BUAA 1032 Destroying a Painting
POJ 2400 Supervisor, Supervisee (输出所有最小权匹配)
POJ 3680 Intervals
HOJ 2543 Stone IV
POJ 2135 Farm Tour
SOJ 3186 Segments
SOJ 2927 终极情报网
SOJ 3634 星际竞速
HDU 3376 Matrix Again
-----------------------------------数据结构---------------------------------
-----------------------------------基础数据结构
----------------------栈
SOJ2511 Moooo
SOJ3085 windy's cake V(经典 栈与单调性的结合)
SOJ3279 hm 与 zx 的故事系列2
SOJ3329 Maximum Submatrix II(转化为上面两题的模型)
---------------------双端队列
SOJ2978 Tasks
SOJ3139 Sliding Window(双端队列最经典的应用)
SOJ3636 理想的正方形
-------------------- --------------高级数据结构
---------------------线段树
SOJ1862 Choice Pears
SOJ2057 The manager's worry
SOJ2249 Mayor's posters
SOJ2309 In the Army Now
SOJ2436 Picture puzzle game
SOJ2556 Find the Permutation
SOJ2562 The End of Corruption
SOJ2719 Corral the Cows(线段树+二分)
SOJ2740 Balanced Lineup
SOJ2745 零序列
SOJ2776 Matrix Searching
SOJ2808 Thermal Death of the Universe
SOJ2822 Buy Tickets
SOJ2937 Tetris
SOJ2938 Apple Tree(先DFS获得欧拉序列)
SOJ2965 capitally players
SOJ2968 Matrix(二维线段树)
SOJ3019 Count Color
SOJ3022 Difference Is Beautiful( RMQ+二分 经典模型)
SOJ3086 windy's cake VI(二维线段树)
SOJ3099 A Simple Problem with Integers
SOJ3248 Mousetrap
SOJ3321 Windy's Sequence II
SOJ3370 Light Switching
SOJ3640 Special Subsequence
---------------------树状数组
SOJ2309 In the Army Now
---------------------归并排序思想
SOJ2906 Ultra-QuickSort
SOJ2431 Cows distribute food(利用归并排序求逆序数：nlogn)
SOJ2497 Number sequence
SOJ2559 What is the Rank?
SOJ2728 MooFest
SOJ3009 Stones for Amy
SOJ3010 K-th Number
SOJ3147 K-th number
---------------------并查集
SOJ1824 The Suspects
SOJ1953 key
SOJ2245 Ubiquitous Religions
SOJ2389 Journey to Tibet
SOJ2438 Pet
SOJ2490 Math teacher's test
POJ2832 How many pairs?
POJ2821 Auto-Calculation Machine
SOJ2979 食物链
SOJ3282 Kingdom of Heaven
SOJ3417 Skyscrapers
------------------------块状链表
SOJ3032 Big String
SOJ3035 反转序列
----------------------------------- 字符串
---------------------后缀数组
SOJ1948 sekretarka
SOJ3045 Long Long Message
SOJ3075 回文子串
SOJ3296 Windy's S
---------------------KMP
SOJ2652 Oulipo
SOJ2307 String Matching
SOJ3014 Seek the Name, Seek the Fame
SOJ3596 Article Decryption
--------------------trie树
SOJ3076 相同字符串
SOJ3336 Diary
SOJ3596 Article Decryption
---------------------------------组合数学及数论-----------------------------
SOJ1839 Relatives(Euler函数)
SOJ1942 Foto
SOJ2714 Mountains (II)
SOJ2668 C(n,k)
SOJ2666 分解 n!
SOJ2106 GCD & LCM Inverse
SOJ2498 Count prime
SOJ2238 Let it Bead(置换群-polya定理的应用)
SOJ2924 完美交换（置换群）
SOJ2638 Cow Sorting（置换群）
-------------费马小定理
SOJ 3578 H1N1's Problem
--------------------------容斥原理
SOJ3191 Free square
SOJ3082 windy's cake II
SOJ3502 The Almost Lucky Numbers
SOJ3547 Coprime
----------------------------------博弈论------------------------------------
SOJ1128 控 制 棋
SOJ1866 Games(诡异的博弈)
SOJ2197 A Funny Game
SOJ2188 A multiplication game
SOJ2403 Black and white chess
SOJ2477 Simple Game
SOJ2687 草稿纸 2
SOJ2688 草稿纸 3
SOJ2836 Pick Up Points II
SOJ2845 Jange
SOJ2922 A New Tetris Game
SOJ2993 Nim
SOJ3066 John
SOJ3132 windy和水星 -- 水星游戏 1
SOJ3133 windy和水星 -- 水星游戏 2
SOJ3174 Good game
SOJ3307 Stockholm Game
SOJ3446 Nim or not Nim
SOJ3461 Nim-k
SOJ3463 Ordered Nim
SOJ3468 Flip Coins
SOJ3548 game
SOJ3584 Baihacker and Oml
-----------------------------------编译原理---------------------------------
1016 Tree Summing
1038 Trees on the level
1047 FORCAL
1663 (Your)((Term)((Project)))
1672 Trees Made to Order
1795 HTML
1864 Binary Trees' Order
1901 Boolean Expresions
2230 Calculator
2441 24 dot
2570 算法复杂度
2697 Expression
2792 Syntax Tree
3089 windy's cake IX
2334 Decoding
1978: Zipper
2883 Tautology
3489 Lambda-Calculus
3490 Type Derivation
1695 Lazy Math Instructor
1788 Friends
2352 Molecular Formula
2004: SHEET
2255: Any fool can do it
2457 brainfck
3546 Calculator
1646 乘方表达式显示
-----------------------------------计算几何---------------------------------
soj 1041: Pipe 黑书上的题目
soj 1138: Wall 凸包入门
soj 1166: Art Gallery 求核面积
soj 1171: Area 2 多边形面积，皮克定理
soj 1333: EXOCENTER OF A TRIANGLE 求三角形垂心
soj 1669: Space Ant 深刻理解叉积含义，类似于卷包裹法
soj 1893: Line of Sight 线段相交的判断 + 贪心，注意非法数据
soj 1916: Circle and Points 枚举
soj 2003: TOYS 核心是判断一个点是否在四边形内部
soj 2120: Triangle n个点选出三个点能组成三角形的最大面积，凸包+旋转卡壳
soj 2190: Treasure Hunt 问题转化 + 枚举
soj 2211: Conic distance 余弦定理
soj 2233: Model Rocket Height 平行四边形的性质
soj 2345: Pick-up Sticks 枚举+线段相交判断
soj 2460: Model Rocket Height 求三维坐标中两条射线间距离的中点的高度
soj 2474: Chaffy dish 判断线段与圆的位置关系
soj 2581: How I Mathematician Wonder What You Are 星型多边形求核，半平面相交
soj 2748: 直线与点 枚举
soj 2789: Segments 枚举
soj 2879: Texas Trip 求包含所有点的最小面积的正方形的面积 二次迭代或者三分都行
soj 2881: Rectilinear polygon 注意读题，另外soj数据较弱，没有自交情况
soj 3245: Model Rocket Height 正弦定理
soj 3257: Common area 判断两个多边形是否有公共面积
soj 3445: Convex Hull 求凸包的逆时针排序输入，主要考共线点的处理，方法见黑书P396，另数据较弱，其他很多方法是水过去的
soj 3487: Convex Hull of Lattice Points 凸包
soj 3585: BigCircle and BigSquare 判断圆与正方形是否相交，注意极端情况
soj 3684: Triangle Counting 求给出的n个点能组成的三角形中完全包含原点的个数