N皇后问题 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1757 Accepted Submission(s): 772 Problem Description 在N*N的方格棋盘放置了N个皇后,使得它们不相互攻击(即任意2个皇后不允许处在同一排,同一列,也不允许处在与棋盘边框成45角的斜线上.你的任务是,对于给定的N,求出…
[98]Validate Binary Search Tree [99]Recover Binary Search Tree [100]Same Tree [101]Symmetric Tree [104]Maximum Depth of Binary Tree [105]Construct Binary Tree from Preorder and Inorder Traversal [106]Construct Binary Tree from Inorder and Postorder T…
题目链接:http://acm.hnu.cn/online/?action=problem&type=show&id=13341&courseid=0 Joke with permutation Time Limit: 3000ms, Special Time Limit:7500ms, Memory Limit:65536KB Total submit users: 85, Accepted users: 57 Problem 13341 : Special judge Prob…
Ignatius and the Princess I Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10541 Accepted Submission(s): 3205Special Judge Problem Description The Princess has been abducted by the BEelzebub…
Lake Counting Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 18201 Accepted: 9192 Description Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 <= N <= 100…
A Knight's Journey Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 35342 Accepted: 12051 Description Background The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey …
POJ 2676 Sudoku Time Limit: 2000MS Memory Limit: 65536K Total Submissions: 17627 Accepted: 8538 Special Judge Description Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the…
http://poj.org/problem?id=3249 Test for Job Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 8206 Accepted: 1831 Description Mr.Dog was fired by his company. In order to support his family, he must find a new job as soon as possible. No…
[题目链接:HDOJ-2952] Counting Sheep Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2476 Accepted Submission(s): 1621 Problem Description A while ago I had trouble sleeping. I used to lie awake,…
深搜,从一点向各处搜找到全部能走的地方. Problem Description There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he can move to one of four adjacent tiles. But he can't move on…
Description Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 <= N <= 100; 1 <= M <= 100) squares. Each square contains either water ('W') or dry land ('.'). Farmer…