regex_pattern=r"([\w.]*@[\w.]*\.[a-z]+)"

    public static void findEmailAddresses(ArrayList<String> items) {
        Pattern pattern = Pattern.compile("\\w*\\.?[a-zA-Z_0-9]+@([a-zA-Z_0-9]+\\.)+[a-zA-Z_0-9]+");
        HashMap<String, String> hashMap = new HashMap<String, String>();
        for (String item : items) {
            Matcher matcher = pattern.matcher(item);
            while(matcher.find()) {
                String value = matcher.group();
                hashMap.put(value, value);
            }
        }
        ArrayList<String> outputList = new ArrayList<String>(hashMap.keySet())  ;
        Collections.sort(outputList);
        String outputStr = "";
        for (String item : outputList) {
            outputStr += item + ";";
        }
        if (!outputStr.isEmpty()) 
            outputStr = outputStr.substring(0, outputStr.length()-1);
        System.out.print(outputStr);
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt(); scanner.nextLine();
        ArrayList<String> sentenceArrayList = new ArrayList<String>();
        while (scanner.hasNextLine()) {
            sentenceArrayList.add(scanner.nextLine());
        }
        findEmailAddresses(sentenceArrayList);
    }

import re
import sys
test_string = sys.stdin.read()
matches = re.findall(r'(\w*\.?\w+@(?:[a-z]+\.)+\w+)', test_string)
print(';'.join(sorted(set(matches))))

import re
print(';'.join(sorted(set([i.group() for i in re.finditer(r'\w+(\.\w+)*@\w+(\.\w+)+',' '.join([input() for _ in range(int(input()))]))]))))