Submission #1757899

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Source Code Expand

import java.util.*;

class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String s=scan.nextLine();
        Set<String> a=new HashSet<String>();
        String b="";
        for(char c:s.toCharArray()){
            if(c>='a'&&c<='z'){
                if(b.length()>=1)
                    b+=c;
            }else{
                if(b.length()>=2)
                    a.add(b);
                b="";
            }
            if(c=='@'){
                b+='@';
            }
        }
        if(b.length()>=2)
            a.add(b);
        List<String> l=new ArrayList<String>(a);
        Collections.sort(l);
        for(String ss:l)
            System.out.println(ss.substring(1));
    }
}

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