в чем ошибка?
package com.javarush.task.task07.task0708;
import java.util.ArrayList;
import java.util.ArrayList;
import java.io.*;
/*
Самая длинная строка
*/
public class Solution {
private static ArrayList<String> strings;
public static void main(String[] args) throws Exception {
//напишите тут ваш код
strings = new ArrayList<>();
int i = 0;
int min = 0;
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
for (i = 0; i < 5; i++){
String st = reader.readLine();
strings.add(st);
}
int a = strings.get(0).length();
String b = "" ;
int f = 0;
for (f = 0; f < strings.size(); f ++) {
if (strings.get(f).length() > a){
b = strings.get(f);
a = strings.get(f).length();
}
}
int q = 0;
int index = strings.indexOf(b);
for (q = 0; q < strings.size(); q ++) {
if (b.length() == strings.get(q).length() && b.length() != strings.get(index).length()){
System.out.println(b); }
}
System.out.println(b);
}
}