题目描述: 给你一个n,然后让你输出F(n)规则是这样的,F(n)的输出结果是:F(n-1) F(n-1) F(n-1) F(n-1) F(n-1) F(1)的输出结果是:X那么根据规则F(2)的输出结果应该是:X X X X X 输入: 题目有多组输入,每组输入一个n(n<=7). 当输入零或负数的时候结束输入. 输出: 对每组输入输出相应的F(n),每组输出最后一行是‘#’. 样例输入: 1 2 3 -1 样例输出: X # X X X X X # X X…
Asteroids! Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 3159 Accepted Submission(s): 2106 Problem Description You're in space.You want to get home.There are asteroids.You don't want to hit…
题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=2822 Dogs Description Prairie dog comes again! Someday one little prairie dog Tim wants to visit one of his friends on the farmland, but he is as lazy as his friend (who required Tim to come to his place…
Xiangqi Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4121 Description Xiangqi is one of the most popular two-player board games in China. The game represents a battle between two armies with the goal of captu…
传递 Time Limit: 12000/6000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others) Problem Description 我们称一个有向图G是传递的,当且仅当对任意三个不同的顶点a,,若G中有 一条边从a到b且有一条边从b到c ,则G中同样有一条边从a到c.我们称图G是一个竞赛图,当且仅当它是一个有向图且它的基图是完全图.换句 话说,将完全图每条边定向将得到一个竞赛图.下图展示的是一个有4个顶点…
Counting Cliques Time Limit: 8000/4000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 539 Accepted Submission(s): 204 Problem Description A clique is a complete graph, in which there is an edge between every pair…
Bomb Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10 Accepted Submission(s): 3 Problem Description There are N bombs needing exploding.Each bomb has three attributes: exploding radius ri,…
Coconuts Time Limit: 9000/4500 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 524 Accepted Submission(s): 151 Problem Description TanBig, a friend of Mr. Frog, likes eating very much, so he always has dreams abou…
Auxiliary Set Time Limit: 9000/4500 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 873 Accepted Submission(s): 271 Problem Description Given a rooted tree with n vertices, some of the vertices are important.An au…
Barricade Time Limit: 3000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 997 Accepted Submission(s): 306 Problem Description The empire is under attack again. The general of empire is planning to defend his…
Sparse Graph Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 689 Accepted Submission(s): 238 Problem Description In graph theory, the complement of a graph G is a graph H on the same vertic…