.
package com.javarush.task.task19.task1908;
import java.io.*;
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 fileName1 = reader.readLine();
String fileName2 = reader.readLine();
reader.close();
BufferedReader fileReader = new BufferedReader(new FileReader(fileName1));
BufferedWriter fileWriter = new BufferedWriter(new FileWriter(fileName2));
StringBuilder stringBuilder = new StringBuilder();
while (fileReader.ready()){
stringBuilder.append((char) fileReader.read());
}
fileReader.close();
String s = stringBuilder.toString();
Pattern pattern = Pattern.compile("\\d+");
Matcher matcher = pattern.matcher(s);
while(matcher.find()){
fileWriter.write(matcher.group()+ " ");
System.out.println(matcher.group()+ " ");
}
fileWriter.close();
}
}