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package com.javarush.task.task07.task0708;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Самая длинная строка
*/
public class Solution {
private static ArrayList<String> strings;
public static void main(String[] args) throws Exception {
strings = new ArrayList<String>();
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
for(int i = 0; i < 5; i++){
String s = reader.readLine();
strings.add(s);
}
for(int k = 0; k <= strings.size();k++)
for(int i = 1; i < strings.size(); i++){
if (strings.get(i).length() > strings.get(i-1).length()) {
strings.remove(i - 1);
i--;
}
else if (strings.get(i).length() == strings.get(i-1).length());
else{
strings.remove(i);
i--;
}
}
for(int i = 0; i < strings.size(); i++){
System.out.println(strings.get(0));
}
}
}