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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 28: RegEx, Patterns, and Intro to Databases

Day 28: RegEx, Patterns, and Intro to Databases

Objective
Today, we're working with regular expressions. Check out the Tutorial tab for learning materials and an instructional video!

Task
Consider a database table, Emails, which has the attributes First Name and Email ID. Given rows of data simulating the Emails table, print an alphabetically-ordered list of people whose email address ends in .

Input Format

The first line contains an integer, , total number of rows in the table.
Each of the subsequent lines contains space-separated strings denoting a person's first name and email ID, respectively.

Constraints

  • Each of the first names consists of lower case letters only.
  • Each of the email IDs consists of lower case letters , and only.
  • The length of the first name is no longer than 20.
  • The length of the email ID is no longer than 50.

Output Format

Print an alphabetically-ordered list of first names for every user with a gmail account. Each name must be printed on a new line.

Sample Input

6
riya riya@gmail.com
julia julia@julia.me
julia sjulia@gmail.com
julia julia@gmail.com
samantha samantha@gmail.com
tanya tanya@gmail.com

Sample Output

julia
julia
riya
samantha
tanya