一些好題目
POJ 1190 – 生日蛋糕(基礎，好題)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1190
題意：略
解法：dfs，題偏簡單，但做出來還是有些感覺的
POJ 1376 – Robot(基礎)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1376
題意：略
解法：bfs，A*….
POJ 2688 – Cleaning Robot(基礎)
http://acm.pku.edu.cn/JudgeOnline/problem?id=2688
題意：bfs後轉換爲tsp問題
解法：bfs+dp，bfs+dfs
相關：http://hi.baidu.com/zfy0701/blog/item/ceb06f261749a6128a82a1b2.html
POJ 3322 – Bloxorz I(基礎)
http://acm.pku.edu.cn/JudgeOnline/problem?id=3322
題意：略，這個遊戲本身很好玩http://jandan.net/2008/01/24/bloxorz.html
解法：廣搜，雙向廣搜
相關：http://hi.baidu.com/zfy0701/blog/item/d7b6490f847948e8ab6457c6.html
POJ 2308 – Dearboy’s Puzzle(中等，但做的人少?)
http://acm.pku.edu.cn/JudgeOnline/problem?id=2308
題意：判斷連連看是否有解
解法：DFS + BFS
相關：http://hi.baidu.com/zfy0701/blog/item/c62f41af65aa1fca7cd92afc.html
POJ 1324 – Holedox Moving(中等)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1324
題意：略
解法：A*，dfs + 上界剪枝，廣搜
相關：http://hi.baidu.com/zfy0701/blog/item/7fcaba2c3d5425e98a1399cf.html
http://hi.baidu.com/zfy0701/blog/item/a3c44ecc049b1c1501e92806.html
POJ 1084 – Square Destroyer(中等，經典題)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1084
題意：把每個正方型看做集合中的元素，每個木棒看做是一個子集，求最小的子集覆蓋
解法：dfs，A*，廣搜肯定爆空間
POJ 2449 Remmarguts’ Date(中等，強烈推薦)
http://acm.pku.edu.cn/JudgeOnline/problem?id=2449
題意：經典問題：K短路
解法：dijkstra+A*，方法很多
相關：http://acm.pku.edu.cn/JudgeOnline/showcontest?contest_id=1144
POJ 2044 – Weather Forecast(中等)
http://acm.pku.edu.cn/JudgeOnline/problem?id=2044
題意：略
解法：廣搜，dp，深搜
相關：http://hi.baidu.com/zfy0701/blog/item/d7b6490f847948e8ab6457c6.html
POJ 3635 full tank?(中等)
http://acm.pku.edu.cn/JudgeOnline/problem?id=3635
題意：最短路變形
解法：廣搜
相關：http://hi.baidu.com/hnu_reason/blog/item/086e3dccfc8cb21600e9286b.html
POJ 3074 – Sudoku(中等)
http://acm.pku.edu.cn/JudgeOnline/problem?id=3074
題意：數獨遊戲，數據比2676強很多，但比3076弱
解法：用dfs回溯基本可過，不過每次應選擇可能填的數字最少的格子搜
更快的方法是先轉換成exact cover問題，然後用經典dancing links解決，
dancing links原始論文：http://lanl.arxiv.org/PS_cache/cs/pdf/0011/0011047v1.pdf
翻譯：http://sqybi.com/works/dlxcn/
POJ 1475 – Pushing Boxes(中等，很推薦)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1475
題意：推箱子游戲
解法：雙重bfs(對箱子bfs 時 對人bfs)，A*
POJ 1077 – Eight(中等，此題不做人生不完整)
http://acm.pku.edu.cn/JudgeOnline/problem?id=1077
題意：八數碼問題，超經典題
解法：廣搜，A*，雙向廣搜
簡單搜索
(1)深度優先搜索 (poj2488,poj3009,poj1321)
(2)廣度優先搜索 (poj3278,poj1426,poj3126,poj3087.poj3414,poj2251,poj3083)
(3)簡單搜索技巧和剪枝(poj2531,poj1416,poj2676,1129)
搜索、回溯、遍歷
1022 1111 1118 1129 1190 1562 1564 1573 1655 2184 2225 2243 2312 2362 2378 2386
1010,1011,1018,1020,1054,1062,1256,1321,1363,1501，1650,1659,1664,1753,2078,208
3,2303,2310,2329
簡單：1128, 1166, 1176, 1231, 1256, 1270, 1321, 1543, 1606, 1664, 1731, 1742, 17
45, 1847, 1915, 1950, 2038, 2157, 2182, 2183, 2381, 2386, 2426,
不易：1024, 1054, 1117, 1167, 1708, 1746, 1775, 1878, 1903, 1966, 2046, 2197, 23
49,
推薦：1011, 1190, 1191, 1416, 1579, 1632, 1639, 1659, 1680, 1683, 1691, 1709, 17
14, 1753, 1771, 1826, 1855, 1856, 1890, 1924, 1935, 1948, 1979, 1980, 2170, 2288
, 2331, 2339, 2340,1979（和迷宮類似） 1980（對剪枝要求較高）
1010 stamps
1011 sticks Accepted
1020 Anniversary Cake
1022 Packing Unit 4D Cubes
1024 Tester Program
1054 The Troublesome Frog
1062 昂貴的聘禮
1069 The Bermuda Triangle
1072 Puzzle Out
1077 Eight Accepted 2006-08-19 16:16 A*，也可逆向搜索，預先算出所有狀態
1084 Square Destroyer
1100 Dreisam Equations
1101 The Game (BFS) Accepted 2006-08-31 01:03簡單題，非常普通的BFS
1110 Double Vision
1111 Image Perimeters
1117 Pairs of Integers
1118 Lining Up
1128 Frame Stacking Accepted 2006-07-29
1129 Channel Allocation（圖的最大獨立集）
1137 The New Villa (BFS) Accepted 2006-08-29 23:07
1142 Smith Numbers
1162 Building with Blocks
1164 The castle (DFS)
1166 The Cocks
1167 The buses
1176 Party Lamps
1183 反正切函數的應用 Accepted 2006-08-30 22:27沒勁~一道簡單的數學推導題~
1184 聰明的打字員 Accepted 2006-08-17 06:18 如果覺得自己BFS的題做得差不多了,可以做一下這道題.作了這道題開始對BFS刮目相看了~花了整整一晚上寫代碼,改代碼~
1190 生日蛋糕 搜索的步驟就是，從最低層開始，每一層從可能的最大半徑一直枚舉到最小可能半徑，高度亦如此。一個參數表示層數，表示上一層的半徑，高度，還是剩餘體積，已有面積
1191 棋盤分割
1194 HIDDEN CODES 搜索+DP
1231 The Alphabet Game
1233 Street Crossing (BFS)
1248 Safecracker
1256 Anagram Accepted
1270 Following orders Accepted 2006-08-06 01:59 similar to toposort
1318 Word Amalgamation
1321 棋盤問題
1324 Holedox Moving (BFS)
1327 Moving Object Recognition Accepted 2006-08-22 01:11 Floodfill again
1338 Ugly Numbers
1363 Rails
1376 Robot Accepted 2006-08-13 06:52太陰險了，機器人起始位置和目的地可能重合,BFS
1416 Shredding Company Accepted
1465 Multiple Accepted 2006-08-05 15:21
1476 Always On the Run (BFS)
1480 Optimal Programs (BFS)
1482 It's not a Bug, It's a Feature! (BFS)
1543 Pefect Cubes Accepted
1562 Oil Deposits Accepted 2006-08-14 04:39 Floodfill
1564 Sum It Up Accepted
1573 Robot Motion
1579 Fuction Run Fun
1601 Pizza Anyone?
1606 Jugs Accepted
1632 Vase collection
1639 Picnic Planing
1655 Balancing Act
1659 Frog's Neighborhood
1664 放蘋果 整數無序拆分
1680 Frok() Makes Trouble
1683 Puzzlestan
1691 Painting A Board
1708 Game
1709 Cross word
1713 Divide et unita
1714 The Cave
1731 orders 任意字符串的全排列
1742 Coins 更像是DP
1745 Divisibility Accepted shouldn't be counted as a searching prob
1746 Loan
1753 Flip Game (BFS) Accepted
1771 Elevator Stopping Plan
1775 Sum of Factorials Accepted
1826 The best Farm
1831 不定方程組
1847 Tram Accepted 2006-08-10 02:35 Dijkstra
1855 Mint
1856 Sea Battle
1873 The Fortified Forest 回溯
1878 Jill's Bike
1882 Stamps
1890 Switching Channels
1903 Jurassic Remains
1915 Knight Moves (BFS) 雙向廣度優先搜索提高效率
1924 The Treasure
1935 Journey
1948 Trianglar Pastures
1950 Dessert
1966 Cable TV Network
1979 Red and Black Accepted 2006-08-05 17:04
1980 Unit Fraction Partition 剪枝
2038 Team Ranking Accepted 2006-08-11 19:12無聊題，全排列加四層循環=0ms
2046 Gap
2049 Finding Nemo
2078 Matrix
2083 Fractal
2157 Maze
2170 Lattice Animals
2182 LOst cows Accepted 2006 08-13 17:02 segment tree
2184 Cow Exibition
2197 Jill's Tour Paths
2225 Asteriods! Accepted
2251 Dungeon Master Accepted 2006-08-21 02:39三維迷宮BFS，簡單
2288 Islands and Bridges
2243 Knight Moves (BFS) Accepted
2312 Battle City (BFS) Accepted 2006-08-16 01:13一個int型數組定義爲char而痛苦WA了半天。
2331 Water Pipe
2339 Rock, Scissors, Paper
2340 Memory management
2349 Aratic Network
2362 Square Accepted 2006-08-02
2378 Tree Cutting
2386 Lake Counting Accepted 2006-08-14 04:50 Floodfill
2415 Hike on a Gragh Accepted 2006-08-21 01:51普通BFS
2488 A Knight's Journey
2547 No Tipping Accepted 2006-08-21 18:55 DFS+DP狀態壓縮
2676 Sudoku
2908 Quantum Accepted 2006-09-09 20:10 BFS+優先隊列
3620 Avoid The Lakes BFS floodfill
