package zh.codegym.task.task07.task0708;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

/*
最长的字符串
*/

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

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int maxLength = 0;
        for (int i = 0; i < 5; i++) {
            String a = br.readLine();
            strings.add(a);
            if (a.length() > maxLength) {
                maxLength = a.length();
            }
        }
        for (String a : strings) {
            if (a.length() == maxLength) {
                System.out.println(a);
            }
        }
    }
}