Problem 1214 --Magic brackets1214: Magic brackets
Time Limit: 1 Sec Memory Limit: 128 MB
Submit: 571 Solved: 234
[Submit][Status][Web Board]Description
IceRuler likes Brackets. He has n brackets sequences. And you should tell him whether they are matched.
The brackets will only contain {, }, (, ), [, ]. The matching rules are the same as in Math.
Input
The first line is integer T, the number of test cases. (1 <= T <= 20) For each test case, there is an integer n in one line(1 <= n <= 30000) and n lines means n brackets sequences.
Output
For each brackets sequences, print "YES" if it is matched. Otherwise, print "NO".
Sample Input
7
1
(
2
()
2
{]
6
[(){}]
4
(])[
8
[[{{}}]]
6
[][{]]Sample Output
NO
YES
NO
YES
NO
YES
NO
HINT
Source
[Submit][Status]