各类算法题目收集

-----------------------------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)   --------------------------------dancing link ----- ---------------精确覆盖 zju 2580 poj 3074 poj 3076   --------------------------------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&& 扩展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---------------------------------   SOJ1138 Wall SOJ1102 Picnic