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《挑战程序设计竞赛》习题册攻略
https://github.com/yogykwan/acm-challenge-workbook
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《挑战程序设计竞赛》习题册攻略
Host: GitHub
URL: https://github.com/yogykwan/acm-challenge-workbook
Owner: yogykwan
Created: 2016-11-12T12:14:35.000Z (almost 8 years ago)
Default Branch: master
Last Pushed: 2017-12-21T05:05:56.000Z (almost 7 years ago)
Last Synced: 2024-07-05T16:37:45.619Z (3 months ago)
Language: C++
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- Readme: README.md
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README

        # 1 前言

项目为[《挑战程序设计竞赛（第2版）》](http://www.ituring.com.cn/book/1044)习题册攻略，已完结。可配合书籍或笔记，系统学习算法。

* 题量：约200道，代码注释内含详解。

* 难度：总体高于Leetcode，部分接近ACM。

* 题解：代码均AC，题解个人向；Bug或优化请建Issue或Pull Request。

# 1.1 题库来源

- Google Code Jam（[GCJ](https://code.google.com/codejam)）

- Peking University Online Judge（[POJ](http://poj.org/)）

- Aizu Online Judge（[AOJ](http://judge.u-aizu.ac.jp/onlinejudge/index.jsp?lang=en)）

- UVa Online Judge（[UVa](https://uva.onlinejudge.org/)）

- CodeForces（[CF](http://codeforces.com/)）

# 1.2 算法笔记

- [初级篇](http://jennica.space/2016/10/14/acm-challenge-easy/)

- [中级篇](http://jennica.space/2016/11/16/acm-challenge-medium/)

- [高级篇](http://jennica.space/2016/11/30/acm-challenge-hard/)

# 1.3 题库目录

* 初级： 

[穷竭搜索](#21-穷竭搜索)、

[贪心法](#22-贪心法)、

[动态规划](#23-动态规划)、

[数据结构](#24-数据结构)、

[图论](#25-图论)、

[数论](#26-数论)

* 中级：

[二分搜索](#31-二分搜索)、

[常用技巧](#32-常用技巧)、

[数据结构（二）](#33-数据结构二)、

[动态规划（二）](#34-动态规划二)、

[网络流](#35-网络流)、

[计算几何](#36-计算几何)

* 高级：

[数论（二）](#41-数论二)、

[博弈论](#42-博弈论)、

[图论（二）](#43-图论二)、

[常用技巧（二）](#44-常用技巧二)、

[智慧搜索](#45-智慧搜索)、

[分治](#46-分治)、

[字符串](#47-字符串)

# 2 初级算法

# 2.1 穷竭搜索

- 深度优先搜索

  - [x] [POJ 1979: Red and Black](http://poj.org/problem?id=1979)

  - [x] [AOJ 0118: Property Distribution](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0118)

  - [x] [AOJ 0033: Ball](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0033)

  - [x] [POJ 3009: Curling 2.0](http://poj.org/problem?id=3009)

- 宽度优先搜索

  - [x] [AOJ 0558: Cheese](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0558)

  - [x] [POJ 3669: Meteor Shower](http://poj.org/problem?id=3669)

  - [x] [AOJ 0121: Seven Puzzle](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0121)

- 穷竭搜索

  - [x] [POJ 2718: Smallest Difference](http://poj.org/problem?id=2718)

  - [x] [POJ 3187: Backward Digit Sums](http://poj.org/problem?id=3187)

  - [x] [POJ 3050: Hopscotch](http://poj.org/problem?id=3050)

  - [x] [AOJ 0525: Osenbei](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0525)

# 2.2 贪心法

- 区间贪心

  - [x] [POJ 2376: Cleaning Shifts](http://poj.org/problem?id=2376)

  - [x] [POJ 1328: Radar Installation](http://poj.org/problem?id=1328)

  - [x] [POJ 3190: Stall Reservations](http://poj.org/problem?id=3190)

  

- 其他贪心

  - [x] [POJ 2393: Yogurt factory](http://poj.org/problem?id=2393)

  - [x] [POJ 1017: Packets](http://poj.org/problem?id=1017)

  - [x] [POJ 3040; Allowance](http://poj.org/problem?id=3040)

  - [x] [POJ 1862: Stripies](http://poj.org/problem?id=1862)

  - [x] [POJ 3262: Protecting the Flowers](http://poj.org/problem?id=3262)

  

# 2.3 动态规划

- 基础DP

  - [x] [POJ 3176: Cow Bowling](http://poj.org/problem?id=3176)

  - [x] [POJ 2229: Sumsets](http://poj.org/problem?id=2229)

  - [x] [POJ 2385: Apple Catching](http://poj.org/problem?id=2385)

  - [x] [POJ 3616: Milking Time](http://poj.org/problem?id=3616)

  - [x] [POJ 3280: Cheapest Palindrome](http://poj.org/problem?id=3280)

- 优化递推式

  - [x] [POJ 1742: Coins](http://poj.org/problem?id=1742)

  - [x] [POJ 3046: Ant Counting](http://poj.org/problem?id=3046)

  - [x] [POJ 3181: Dollar Dayz](http://poj.org/problem?id=3181)

  

- 进阶DP

  - [x] [POJ 1065: Wooden Sticks](http://poj.org/problem?id=1065)

  - [x] [POJ 1631: Bridging signals](http://poj.org/problem?id=1631)

  - [x] [POJ 3666: Making the Grade](http://poj.org/problem?id=3666)

  - [x] [POJ 2392: Space Elevator](http://poj.org/problem?id=2392)

  - [x] [POJ 2184: Cow Exhibition](http://poj.org/problem?id=2184)

  

# 2.4 数据结构

- 优先队列

  - [x] [POJ 3614: Sunscreen](http://poj.org/problem?id=3614)

  - [x] [POJ 2010: Moo University - Financial Aid](http://poj.org/problem?id=2010)

  

- 并查集

  - [x] [POJ 2236: Wireless Network](http://poj.org/problem?id=2236)

  - [x] [POJ 1703: Find them, Catch them](http://poj.org/problem?id=1703)

  - [x] [AOJ 2170: Marked Ancestor](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2170)

# 2.5 图论

- 最短路

  - [x] [AOJ 0189: Convenient Location](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0189)

  - [x] [POJ 2139: Six Degrees of Cowvin Bacon](http://poj.org/problem?id=2139)

  - [x] [POJ 3259: Wormholes](http://poj.org/problem?id=3259)

  - [x] [POJ 3268: Silver Cow Party](http://poj.org/problem?id=3268)

  - [x] [AOJ 2249: Road Construction](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2249)

  - [x] [AOJ 2200: Mr. Rito Post Office](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2200)

  

- 最小生成树

  - [x] [POJ 1258: Agri-Net](http://poj.org/problem?id=1258)

  - [x] [POJ 2377: Bad Cowtractors](http://poj.org/problem?id=2377)

  - [x] [AOJ 2224: Save Your Cats](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2224)

  - [x] [POJ 2395: Out of Hay](http://poj.org/problem?id=2395)

  

# 2.6 数论

- 辗转相除法

  - [x] [AOJ 0005: GCD and LCM](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0005)

  - [x] [POJ 2429: GCD & LCM Inverse](http://poj.org/problem?id=2429)

  - [x] [POJ 1930: Dead Fraction](http://poj.org/problem?id=1930)

  

- 素数

  - [x] [AOJ 0009: Prime Number](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0009)

  - [x] [POJ 3126: Prime Path](http://poj.org/problem?id=3126)

  - [x] [POJ 3421: X-factor Chains](http://poj.org/problem?id=3421)

  - [x] [POJ 3292: Semi-prime H-numbers](http://poj.org/problem?id=3292)

  

- 快速幂

  - [x] [POJ 3641: Pseudoprime numbers](http://poj.org/problem?id=3641)

  - [x] [POJ 1995: Raising Modulo Numbers](http://poj.org/problem?id=1995)

  

# 3 中级算法

# 3.1 二分搜索

- 最大化最小值

  - [x] [POJ 3258: River Hopscotch](http://poj.org/problem?id=3258)

  - [x] [POJ 3273: Monthly Expense](http://poj.org/problem?id=3273)

  - [x] [POJ 3104: Drying](http://poj.org/problem?id=3104)

  - [x] [POJ 3045: Cow Acrobats](http://poj.org/problem?id=3045)

- 01分数规划

  - [x] [POJ 2976: Dropping tests](http://poj.org/problem?id=2976)

  - [x] [POJ 3111: K Best](http://poj.org/problem?id=3111)

  

- 第k大值

  - [x] [POJ 3579: Median](http://poj.org/problem?id=3579)

  - [x] [POJ 3685: Matrix](http://poj.org/problem?id=3685)

  

- 最小化第k大值

  - [x] [POJ 2010: Moo University - Financial Aid](http://poj.org/problem?id=2010)

  - [x] [POJ 3662: Telephone Lines](http://poj.org/problem?id=3662)

  

- 其他二分搜索

  - [x] [POJ 1759: Garland](http://poj.org/problem?id=1759)

  - [x] [POJ 3484: Showstopper](http://poj.org/problem?id=3484)

  

# 3.2 常用技巧

- 尺取法

  - [x] [POJ 2566: Bound Found](http://poj.org/problem?id=2566)

  - [x] [POJ 2739: Sum of Consecutive Prime Numbers](http://poj.org/problem?id=2739)

  - [x] [POJ 2100: Graveyard Design](http://poj.org/problem?id=2100)

- 反转

  - [x] [POJ 3185: The Water Bowls](http://poj.org/problem?id=3185)

  - [x] [POJ 1222: EXTENDED LIGHTS OUT](http://poj.org/problem?id=1222)

  

- 弹性碰撞

  - [x] [POJ 2674: Linear world](http://poj.org/problem?id=2674)

  

- 折半枚举

  - [x] [POJ 3977: Subset](http://poj.org/problem?id=3977)

  - [x] [POJ 2549: Sumsets](http://poj.org/problem?id=2549)

  

- 离散化

  - [x] [AOJ 0531: Paint Color](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0531)

  

# 3.3 数据结构（二）

- 树状数组

  - [x] [POJ 1990: MooFest](http://poj.org/problem?id=1990)

  - [x] [POJ 3109: Inner Vertices](http://poj.org/problem?id=3109)

  - [x] [POJ 2155: Matrix](http://poj.org/problem?id=2155)

  - [x] [POJ 2886: Who Gets the Most Candies?](http://poj.org/problem?id=2886)

- 线段树和平方分割

  - [x] [POJ 3264: Balanced Lineup](http://poj.org/problem?id=3264)

  - [x] [POJ 3368: Frequent values](http://poj.org/problem?id=3368)

  - [x] [POJ 3470: Walls](http://poj.org/problem?id=3470)

  - [x] [POJ 1201: Intervals](http://poj.org/problem?id=1201)

  - [x] [UVa 11990: "Dynamic" Inversion](https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=3141)

  

# 3.4 动态规划（二）

- 状态压缩DP

  - [x] [POJ 2441: Arrange the Bulls](http://poj.org/problem?id=2441)

  - [x] [POJ 3254: Corn Fields](http://poj.org/problem?id=3254)

  - [x] [POJ 2836: Rectangular Covering](http://poj.org/problem?id=2836)

  - [x] [POJ 1795: DNA Laboratory](http://poj.org/problem?id=1795)

  - [x] [POJ 3411: Paid Roads](http://poj.org/problem?id=3411)

- 矩阵的幂

  - [x] [POJ 3420: Quad Tiling](http://poj.org/problem?id=3420)

  - [x] [POJ 3735: Training little cats](http://poj.org/problem?id=3735)

- 数据结构与DP

  - [x] [POJ 3171: Cleaning Shifts](http://poj.org/problem?id=3171)

  

# 3.5 网络流

- 最大流与最小割

  - [x] [POJ 3713: Transferring Sylla](http://poj.org/problem?id=3713)

  - [x] [POJ 2987: Firing](http://poj.org/problem?id=2987)

  - [x] [POJ 2914: Minimum Cut](http://poj.org/problem?id=2914)

  - [x] [POJ 3155: Hard Life](http://poj.org/problem?id=3155)

  

- 二分图匹配

  - [x] [POJ 1274: The Perfect Stall](http://poj.org/problem?id=1274)

  - [x] [POJ 2112: Optimal Milking](http://poj.org/problem?id=2112)

  - [x] [POJ 1486: Sorting Slides](http://poj.org/problem?id=1486)

  - [x] [POJ 1466: Girls and Boys](http://poj.org/problem?id=1466)

  - [x] [POJ 3692: Kindergarten](http://poj.org/problem?id=3692)

  - [x] [POJ 2724: Purifying Machine](http://poj.org/problem?id=2724)

  - [x] [POJ 2226: Muddy Fields](http://poj.org/problem?id=2226)

  - [x] [AOJ 2251: Merry Christmas](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2251)

  

- 最小费用流

  - [x] [POJ 3068: "Shortest" pair of paths](http://poj.org/problem?id=3068)

  - [x] [POJ 2195: Going Home](http://poj.org/problem?id=2195)

  - [x] [POJ 3422: Kaka's Matrix Travels](http://poj.org/problem?id=3422)

  - [x] [AOJ 2266: Cache Strategy](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2266)

  - [x] [AOJ 2230: How to Create a Good Game](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2230)

  

# 3.6 计算几何

- 极限

  - [x] [POJ 1981: Circle and Points](http://poj.org/problem?id=1981)

  - [x] [POJ 1418: Viva Confetti](http://poj.org/problem?id=1418)

  - [x] [AOJ 2201: Immortal Jewels](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2201)

  

- 平面扫描

  - [x] [POJ 3168: Barn Expansion](http://poj.org/problem?id=3168)

  - [x] [POJ 3293: Rectilinear polygon](http://poj.org/problem?id=3293)

  - [x] [POJ 2482: Stars in Your Window](http://poj.org/problem?id=2482)

  

# 4.1 数论（二）

- 模运算

  - [x] [POJ 1150: The Last Non-zero Digit](http://poj.org/problem?id=1150)

  - [x] [POJ 1284: Primitive Roots](http://poj.org/problem?id=1284)

  - [x] [POJ 2115: C Looooops](http://poj.org/problem?id=2115)

  - [x] [POJ 3708: Recurrent Function](http://poj.org/problem?id=3708)

  - [x] [POJ 2720: Last Digits](http://poj.org/problem?id=2720)

  - [x] [GCJ 2011 Final B: Bacterial Reproduction](https://code.google.com/codejam/contest/dashboard?c=1363489#s=p1)

- 矩阵

  - [x] [POJ 2345: Central heating](http://poj.org/problem?id=2345)

  - [x] [POJ 3532: Resistance](http://poj.org/problem?id=3532)

  - [x] [POJ 3526: The Teacher’s Side of Math](http://poj.org/problem?id=3526)

  

- 计数

  - [x] [POJ 2407: Relatives](http://poj.org/problem?id=2407)

  - [x] [POJ 1286: Necklace of Beads](http://poj.org/problem?id=1286)

  - [x] [POJ 2409: Let it Bead](http://poj.org/problem?id=2409)

  - [x] [AOJ 2164: Revenge of the Round Table](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2164)

  - [x] [AOJ 2214: Warp Hall](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2214)

  

# 4.2 博弈论

- 博弈DP

  - [x] [POJ 1082: Calendar Game](http://poj.org/problem?id=1082)

  - [x] [POJ 2068: Nim](http://poj.org/problem?id=2068)

  - [x] [POJ 3688: Cheat in the Game](http://poj.org/problem?id=3688)

  - [x] [POJ 1740: A New Stone Game](http://poj.org/problem?id=1740)

- Nim和Grundy数

  - [x] [POJ 2975: Nim](http://poj.org/problem?id=2975)

  - [x] [POJ 3537: Crosses and Crosses](http://poj.org/problem?id=3537)

  - [x] [CF 138D: World of Darkraft](http://codeforces.com/problemset/problem/138/D)

  - [x] [POJ 2315: Football Game](http://poj.org/problem?id=2315)

  

# 4.3 图论（二）

- 强连通分量

  - [x] [POJ 3180: The Cow Prom](http://poj.org/problem?id=3180)

  - [x] [POJ 1236: Network of Schools](http://poj.org/problem?id=1236)

  

- 2-SAT

  - [x] [POJ 3678: Katu Puzzle](http://poj.org/problem?id=3678)

  - [x] [POJ 2723: Get Luffy Out](http://poj.org/problem?id=2723)

  - [x] [POJ 2749: Building roads](http://poj.org/problem?id=2749)

  

- LCA

  - [x] [POJ 1986: Distance Queries](http://poj.org/problem?id=1986)

  - [x] [POJ 3728: The merchant](http://poj.org/problem?id=3728)

# 4.4 常用技巧（二）

- 栈

  - [x] [POJ 3250: Bad Hair Day](http://poj.org/problem?id=3250)

  - [x] [POJ 2082: Terrible Sets](http://poj.org/problem?id=2082)

  - [x] [POJ 3494: Largest Submatrix of All 1’s](http://poj.org/problem?id=3494)

  

- 双端队列

  - [x] [POJ 2823: Sliding Window](http://poj.org/problem?id=2823)

  - [x] [POJ 3260: The Fewest Coins](http://poj.org/problem?id=3260)

  - [x] [POJ 1180: Batch Scheduling](http://poj.org/problem?id=1180)

  - [x] [AOJ 1070: FIMO sequence](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1070)

# 4.5 智慧搜索

- 剪枝

  - [x] [POJ 1011: Sticks](http://poj.org/problem?id=1011)

  - [x] [POJ 2046: Gap](http://poj.org/problem?id=2046)

  - [x] [POJ 3134: Power Calculus](http://poj.org/problem?id=3134)

  

- A\*与IDA\*

  - [x] [POJ 3523: The Morning after Halloween](http://poj.org/problem?id=3523)

  - [x] [POJ 2032: Square Carpets](http://poj.org/problem?id=2032)

  - [x] [UVa 10181: 15-Puzzle Problem](https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=13&page=show_problem&problem=1122)

# 4.6 分治

- 数列分治

  - [x] [POJ 1854: Evil Straw Warts Live](http://poj.org/problem?id=1854)

- 平面分治

  - [x] [GCJ 2009 Final B: Min Perimeter](https://code.google.com/codejam/contest/dashboard?c=311101#s=p1)

  - [x] [CF 97B: Superset](http://codeforces.com/problemset/problem/97/B)

  

- 树分治

  - [x] [POJ 2114: Boatherds](http://poj.org/problem?id=2114)

  - [x] [UVa 12161: Ironman Race in Treeland](https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&category=243&problem=3313)

  - [x] [SPOJ 2939: Query on a tree V](http://www.spoj.com/problems/QTREE5/)

  

# 4.7 字符串

- 字符串DP

  - [x] [AOJ 2212: Stolen Jewel](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2212)

  - [x] [CF 86C: Genetic Engineering](http://codeforces.com/problemset/problem/86/C)

  

- 字符串匹配

  - [x] [CF 25E: Test](http://codeforces.com/problemset/problem/25/E)

  - [x] [AOJ 1312: Where's Wally](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=1312)

- 后缀数组

  - [x] [POJ 1509: Glass Beads](http://poj.org/problem?id=1509)

  - [x] [POJ 3415: Common Substrings](http://poj.org/problem?id=3415)

  - [x] [POJ 3729: Facer’s string](http://poj.org/problem?id=3729)

  - [x] [AOJ 2292: Common Palindromes](http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=2292)

  - [x] [CF 123D: String](http://codeforces.com/problemset/problem/123/D)