import java.util.Scanner;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

//Validating an email address of domain: samarthbais using regular expression in Java

/*

* ^ - starting of the matching regex

* $ - ending of the matching regex

* \\w - Any alphanumeric character

* \\. - Dot character

* + - More than one character

*/

public class JavaRegex {

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

String email = sc.next();

Pattern p = Pattern.compile("^\\w+@samarthbais\\.com$");

Matcher matcher = p.matcher(email);

if(matcher.find()){

System.out.println("The Person has a valid samarthbais account!");

}

else

System.out.println("This is not a valid samarthbais account!");

}

}