Online JudgeProblem SetAuthorsOnline ContestsUser
Web Board
Home Page
F.A.Qs
Statistical Charts
Problems
Submit Problem
Online Status
Prob.ID:
Register
Update your info
Authors ranklist
Current Contest
Past Contests
Scheduled Contests
Award Contest
User ID:
Password:
  Register

关于1144…………

Posted by rruucc at 2003-05-28 13:14:17 on Problem 1144
1144我当时用一般的算法来做(大多数人用那种,不必多说了),复杂度是O(N*N),结果开始时是WA,想了很长时间也想不出原因。题目的意思应该就是求割顶的个数吧……

然后用标程提交,就对了………………

标程好象是用图的DFS再加上LOW函数来求割顶……
这题我还找到了标准的测试数据,亲手画了一个有问题的数据,结果发现标准测试数据确实有问题(如果题目没有理解错的话) 在这贴上两个:
error1:
21
17 4 18
1 11
7 5
13 1
3 1
14 5
15 20
9 12
6 8
16 14
18 8
8 4
20 18 10
2 3
12 5
5 9 20
19 20 9 11 2
11 3
4 15
10 3
21 3
0
standard:5
answer:6
they are 1 3 5 8 14 20 (这个是我画了的)

error2:
63
30 11 33 52 9 25 47 28 59 29 32 18 7 35
51 15
19 47 25
32 27
9 46
7 59
13 53
35 17
6 2
63 21 35
52 40
4 58
27 61
43 54
49 16
11 44
25 57
60 54
21 35
23 41 50 11 2 25 3
59 1
33 41 15
53 57
22 62
57 19
34 7
44 46 39 57
48 29 3
47 48
18 29 25
10 38
62 25
56 23 8 62 46 30 6 44 43 60 29 45 26
3 6
40 12 31
38 45 22
8 11 43 13 49 18
14 49
55 10
5 49
28 3 14 61 20 24
54 35
29 5
46 31
45 44
17 54 19
39 61 58 2 26
61 37
1 52 58
12 62 31 56 43 28 61
36 12
58 44
26 29
31 3
50 52 6 28
16 10 51 25
20 54 47 13 29 4 6 44 52 32 53 39 57 3
42 48
0
standard:6
answer:7
they are 7 10 12 28 35 48 61

Followed by:

Post your reply here:
User ID:
Password:
Title:

Content:

Home Page   Go Back  To top


All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator