题目描述
You are given a string $\mbox{S}$.
Your task is to find out whether $\mbox{S}$ is a valid regex or not.
Input Format
The first line contains integer $\mathbf{T}$, the number of test cases.
The next $\mathbf{T}$ lines contains the string $\mbox{S}$.
Constraints
$\textbf{0}<T<100$
Output Format
Print "True" or "False" for each test case without quotes.
Sample Input
2
.+
.+
Sample Output
True
False
Explanation
.*+ : Valid regex.
.*+: Has the error multiple repeat. Hence, it is invalid.
输入格式
见题面
输出格式
见题面
样例输入
2
.*\+
.*+
样例输出
True
False