public class Solution {
    private static ArrayList<String> strings= new ArrayList() ;

    public static void main(String[] args) throws Exception {
        int lineL= 0;
        int max = 0;
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

        int s = 0;
        for(int i = 0; i<5; i++){
            String b = reader.readLine();
            Solution.strings.add(b);

        }
        for ( int i=0; i<5; i++ ){
            String c = Solution.strings.get(i);
            if(c.length()>max){
            max=c.length();
            lineL= i;
            }
        }
        String joker = Solution.strings.get(lineL);
        for( int i = 0; i<5; i++){
            String sykaZaebalo = Solution.strings.get(i);
            if(sykaZaebalo.length()==joker.length()){
                System.out.println(Solution.strings.get(i));
            }
        }
    }
}