Помогите разобраться по какой причине задача не проходит вариацию по п.3

package com.javarush.task.task18.task1822;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        String fileName = reader.readLine();
        FileInputStream fileInputStream = new FileInputStream(fileName);
        BufferedReader fileReader = new BufferedReader(new InputStreamReader(fileInputStream));
        String findString = "";

        Pattern pattern = Pattern.compile("\\Aid " + args[0]+"\\b" );

        boolean close = false;

        while (!close && fileReader.ready()) {
            findString = fileReader.readLine();
            Matcher matcher = pattern.matcher(findString);
            if (matcher.find()) {
                System.out.println(findString);
                close = true;
            }
        }
        fileReader.close();
        fileInputStream.close();
        reader.close();
    }
}