Extract Unique Email Domains

You are given a single string that contains one or more email addresses separated by semicolons (;). Your task is to extract all unique domain names (i.e., the part after the '@' symbol) from these email addresses and print them in lexicographical order (sorted in ascending order).

For example, if the input is alice@example.com;bob@test.com;carol@example.com then the output should be:

example.com
 test.com

Make sure to read input from standard input (stdin) and print your output to standard output (stdout). Each domain should be printed on a separate line.

inputFormat

The input consists of a single line containing email addresses separated by semicolons (;).

Example: alice@example.com;bob@test.com;carol@example.com

outputFormat

Output all unique domain names in lexicographical order, each on a new line.

## sample

alice@example.com

example.com

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