POJ 搜索题
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http://blog.csdn.net/wmn_wmn/article/details/7376860
一些好题目 POJ 1190 – 生日蛋糕(基础，好题) http://acm.pku.edu.cn/JudgeOnline/problem?id=1190 题意：略 解法：dfs，题偏简单，但做出来还是有些感觉的 POJ 1376 – Robot(基础) http://acm.pku.edu.cn/JudgeOnline/problem?id=1376 题意：略 解法：bfs，A*…. POJ 2688 – Cleaning Robot(基础) http://acm.pku.edu.cn/JudgeOnline/problem?id=2688 题意：bfs后转换为tsp问题 解法：bfs+dp，bfs+dfs 相关：http://hi.baidu.com/zfy0701/blog/item/ceb06f261749a6128a82a1b2.html POJ 3322 – Bloxorz I(基础) http://acm.pku.edu.cn/JudgeOnline/problem?id=3322 题意：略，这个游戏本身很好玩http://jandan.net/2008/01/24/bloxorz.html 解法：广搜，双向广搜 相关：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 题意：判断连连看是否有解 解法：DFS + BFS 相关：http://hi.baidu.com/zfy0701/blog/item/c62f41af65aa1fca7cd92afc.html POJ 1324 – Holedox Moving(中等) http://acm.pku.edu.cn/JudgeOnline/problem?id=1324 题意：略 解法：A*，dfs + 上界剪枝，广搜 相关：http://hi.baidu.com/zfy0701/blog/item/7fcaba2c3d5425e98a1399cf.html http://hi.baidu.com/zfy0701/blog/item/a3c44ecc049b1c1501e92806.html POJ 1084 – Square Destroyer(中等，经典题) http://acm.pku.edu.cn/JudgeOnline/problem?id=1084 题意：把每个正方型看做集合中的元素，每个木棒看做是一个子集，求最小的子集覆盖 解法：dfs，A*，广搜肯定爆空间 POJ 2449 Remmarguts’ Date(中等，强烈推荐) http://acm.pku.edu.cn/JudgeOnline/problem?id=2449 题意：经典问题：K短路 解法：dijkstra+A*，方法很多 相关：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 题意：略 解法：广搜，dp，深搜 相关：http://hi.baidu.com/zfy0701/blog/item/d7b6490f847948e8ab6457c6.html POJ 3635 full tank?(中等) http://acm.pku.edu.cn/JudgeOnline/problem?id=3635 题意：最短路变形 解法：广搜 相关：http://hi.baidu.com/hnu_reason/blog/item/086e3dccfc8cb21600e9286b.html POJ 3074 – Sudoku(中等) http://acm.pku.edu.cn/JudgeOnline/problem?id=3074 题意：数独游戏，数据比2676强很多，但比3076弱 解法：用dfs回溯基本可过，不过每次应选择可能填的数字最少的格子搜 更快的方法是先转换成exact cover问题，然后用经典dancing links解决， dancing links原始论文：http://lanl.arxiv.org/PS_cache/cs/pdf/0011/0011047v1.pdf 翻译：http://sqybi.com/works/dlxcn/ POJ 1475 – Pushing Boxes(中等，很推荐) http://acm.pku.edu.cn/JudgeOnline/problem?id=1475 题意：推箱子游戏 解法：双重bfs(对箱子bfs 时 对人bfs)，A* POJ 1077 – Eight(中等，此题不做人生不完整) http://acm.pku.edu.cn/JudgeOnline/problem?id=1077 题意：八数码问题，超经典题 解法：广搜，A*，双向广搜 简单搜索 (1)深度优先搜索 (poj2488,poj3009,poj1321) (2)广度优先搜索 (poj3278,poj1426,poj3126,poj3087.poj3414,poj2251,poj3083) (3)简单搜索技巧和剪枝(poj2531,poj1416,poj2676,1129) 搜索、回溯、遍历 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 简单：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, 推荐：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（和迷宫类似） 1980（对剪枝要求较高） 1010 stamps 1011 sticks Accepted 1020 Anniversary Cake 1022 Packing Unit 4D Cubes 1024 Tester Program 1054 The Troublesome Frog 1062 昂贵的聘礼 1069 The Bermuda Triangle 1072 Puzzle Out 1077 Eight Accepted 2006-08-19 16:16 A*，也可逆向搜索，预先算出所有状态 1084 Square Destroyer 1100 Dreisam Equations 1101 The Game (BFS) Accepted 2006-08-31 01:03简单题，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（图的最大独立集） 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 反正切函数的应用 Accepted 2006-08-30 22:27没劲~一道简单的数学推导题~ 1184 聪明的打字员 Accepted 2006-08-17 06:18 如果觉得自己BFS的题做得差不多了,可以做一下这道题.作了这道题开始对BFS刮目相看了~花了整整一晚上写代码,改代码~ 1190 生日蛋糕 搜索的步骤就是，从最低层开始，每一层从可能的最大半径一直枚举到最小可能半径，高度亦如此。一个参数表示层数，表示上一层的半径，高度，还是剩余体积，已有面积 1191 棋盘分割 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 棋盘问题 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太阴险了，机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 放苹果 整数无序拆分 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 不定方程组 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) 双向广度优先搜索提高效率 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无聊题，全排列加四层循环=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 02:39三维迷宫BFS，简单 2288 Islands and Bridges 2243 Knight Moves (BFS) Accepted 2312 Battle City (BFS) Accepted 2006-08-16 01:13一个int型数组定义为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状态压缩 2676 Sudoku 2908 Quantum Accepted 2006-09-09 20:10 BFS+优先队列 3620 Avoid The Lakes BFS floodfill