Let's dive into the interesting topic of regular expressions! You are given some input, and you are required to check whether they are valid mobile numbers.
A valid mobile number is a ten digit number starting with a or .
Concept
A valid mobile number is a ten digit number starting with a or .
Regular expressions are a key concept in any programming language. A quick explanation with Python examples is available here. You could also go through the link below to read more about regular expressions in Python.
https://developers.google.com/edu/python/regular-expressions
Input Format
The first line contains an integer , the number of inputs.
lines follow, each containing some string.
Constraints
Output Format
For every string listed, print "YES" if it is a valid mobile number and "NO" if it is not on separate lines. Do not print the quotes.
Sample Input
2
9587456281
1252478965
Sample Output
YES
NO