import java.io.*;
import java.util.ArrayList;
import java.util.List;

public class HexDec_Converter {
    private static boolean flagin;
    private static String pathin;
    private static boolean flagout;
    private static String pathout;

    public static void main(String[] args) {
        String argstring = "";
        for (String s : args) {
            if (s.startsWith("-i")) {
                flagin = true;
                pathin = s.replaceFirst("-i", "");
                if (pathin.isEmpty())
                    pathin = System.getProperty("user.dir") + "/input.txt";
            } else if (s.startsWith("-o")) {
                flagout = true;
                pathout = s.replaceFirst("-o", "");
                if (pathout.isEmpty())
                    pathout = System.getProperty("user.dir") + "/output.txt";
            } else {
                argstring += s+"\n";
            }
        }

        StringBuffer buff = new StringBuffer();
        if (flagin) {
            try (FileReader reader = new FileReader(pathin)) {
                int c;
                while ((c = reader.read()) != -1) {
                    buff.append((char) c);
                }
            } catch (IOException ex) {
                System.out.println(ex.getMessage());
            }
        } else {
            buff.append(argstring);
        }

        List<String> list = new ArrayList<>();
        String[] strings = buff.toString().split("(,|;|\n|\r|\t|\f|\\s)+"); //CR, LF or CRLF
        String buffstring;
        for (String a : strings) {
            if (a.startsWith("0x")) {
                try {
                    buffstring = Integer.decode(a).toString();
                } catch (NumberFormatException e) {
                    buffstring = "invalid hexadecimal value";
                }
            } else {
                try {
                    buffstring = Integer.toHexString(Integer.valueOf(a));
                } catch (NumberFormatException e) {
                    buffstring = "invalid decimal value";
                }
            }
            String out = new String(a + "  " + buffstring + "\n");
            if (!flagout) {
                System.out.println(out);
            } else {
                list.add(out);
            }
        }

        if (flagout) {
            try (FileWriter writer = new FileWriter(pathout)) {
                StringBuilder stringBuilder = new StringBuilder();
                for (String s :
                        list) {
                    stringBuilder.append(s);
                }
                writer.write(stringBuilder.toString());
                writer.flush();
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        } else {
            for (String s :
                    list) {
                System.out.println(s);
            }
        }
    }
}