/*
 * Cuts down the ratings file to a smaller size, to make debugging faster.
 *
 * @author Dave Musicant
 */

import java.io.*;
import java.util.*;

public class FewerRatings
{
    public static void main(String[] args) throws IOException
    {
        Scanner in = new Scanner(new FileInputStream("ratings.dat"));

        // The ratings are delimited by a double colon within a line, or
        // by a "newline" at the end of a line
        in.useDelimiter("::|\\n");

        // Want to read only the first 500 users; but also should be safe
        // and make sure haven't gone past the end of the file
        int userId = -1;
        int maxUserId = 500;
        while (in.hasNext() && userId <= maxUserId)
        {
            userId = in.nextInt();
            int movieId = in.nextInt();
            int rating = in.nextInt();
            int time = in.nextInt();
            if (userId <= maxUserId)
            {
                System.out.println(userId + "::" + movieId + "::" +
                                   rating + "::" + time);
            }
        }
    }
}