package wspp;

import java.io.*;
import java.nio.charset.StandardCharsets;
import java.util.*;

public class Wspp {
    public static void main(String[] args) {
        if (args.length != 2) {
            System.err.println("Usage: java Wspp inputFile outputFile");
            return;
        }

        String inputFile = args[0];
        String outputFile = args[1];

        try {
            WordScanner scanner = new WordScanner(inputFile);
            
            Map<String, WordInfo> wordMap = new LinkedHashMap<>();
            int wordPosition = 1;

            while (scanner.hasNextWord()) {
                String word = scanner.nextWord();
                
                if (wordMap.containsKey(word)) {
                    WordInfo info = wordMap.get(word);
                    info.count++;
                    info.positions.add(wordPosition);
                } else {
                    WordInfo info = new WordInfo();
                    info.count = 1;
                    info.positions = new IntList();
                    info.positions.add(wordPosition);
                    wordMap.put(word, info);
                }
                
                wordPosition++;
            }

            scanner.close();

            PrintWriter writer = new PrintWriter(
                new OutputStreamWriter(
                    new FileOutputStream(outputFile), StandardCharsets.UTF_8));

            for (Map.Entry<String, WordInfo> entry : wordMap.entrySet()) {
                String word = entry.getKey();
                WordInfo info = entry.getValue();
                
                writer.print(word + " " + info.count);
                for (int i = 0; i < info.positions.size(); i++) {
                    writer.print(" " + info.positions.get(i));
                }
                writer.println();
            }

            writer.close();

        } catch (IOException e) {
            System.err.println("Error: " + e.getMessage());
        }
    }
}