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3896:Greatest TC

题目描述
TC (Tian Chao) is magical place, as you all know...
The railways and the rail-stations in TC are fragile and always meet with different kinds of problems. In order to reach the destination safely on time, you are asked to develop a system which has two types of main functions as below.
1: A B C D, reporting whether we can get from station A to station B without passing the railway that connects station C and station D.
2: A B C, reporting whether we can get from station A to station B without passing station C.
Please notice that the railways are UNDIRECTED.
输入解释
For each test case, the first line will contain two integers N (2<=N<=100000) and M (1<=M<=500000), namely the number of stations and railways in TC. Then each of the next M lines will have two integers, describing the two stations that a certain railway is connecting. After this, there comes a line containing a single integer Q (Q<=300000), which means the number of queries to make on the system. The next Q lines will be queries. Each query begins with a integer, indicating the type of query, followed by 4 (the first type) or 3 (the second type) integers describing the details of the query as what mentioned above.
The stations are always labeled from 1 to N.
输出解释
For each test case, print "yes" or "no" in separated lines for the queries.
输入样例
13 15
1 2
2 3
3 5
2 4
4 6
2 6
1 4
1 7
7 8
7 9
7 10
8 11
8 12
9 12
12 13
5
1 5 13 1 2
1 6 2 1 4
1 13 6 7 8
2 13 6 7
2 13 6 8
输出样例
yes
yes
yes
no
yes
来自杭电HDUOJ的附加信息
Recommend

该题目是Virtual Judge题目,来自 杭电HDUOJ

源链接: HDU-3896

最后修改于 2020-10-25T23:08:03+00:00 由爬虫自动更新

共提交 0

通过率 --%
时间上限 内存上限
12000/4000MS(Java/Others) 65536/32768K(Java/Others)