import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;
import java.util.regex.Pattern;
import java.util.stream.Stream;

/**
 * The main class for OfficeParty.
 * @author ronnie
 *
 */
public class Main
{
    static final Pattern officeGoer = Pattern.compile("^(\\w+) (\\d+(?:.\\d+)?)(( (\\w+))*)$");

    public static void main(String[] args) throws FileNotFoundException
    {
        Scanner inputScanner = new Scanner(new File("office.dat"));
        int numOfficesRemaining = Integer.parseInt(inputScanner.nextLine()); //The first line is how many offices there are.
        while (numOfficesRemaining > 0) { //For each office
            int peopleInOffice = Integer.parseInt(inputScanner.nextLine()); //The next line is how many people are in this office.
            ArrayList<String> workerLines = new ArrayList<>(peopleInOffice);

            for (int i = 0; i < peopleInOffice; i++) { //Make a list of the lines in this office.
                workerLines.add(inputScanner.nextLine());
            }

            workerLines.stream().map(s -> officeGoer.matcher(s)).map(m -> {m.find(); return m;}) //Process the lines.
            .map(m -> new OfficeWorker(m.group(1), Double.parseDouble(m.group(2)), m.group(3).split(" ")))
            .collect(
                    HashMap<String, Double>::new,
                    (m, w) -> {
                        m.put(w.us, m.getOrDefault(w.us, 0.) - w.money);
                        double count = w.others.length - 1; //The results of splitting on spaces is an array one larger than the number of people we're giving money to.
                        Stream.of(w.others).filter(s -> !s.isEmpty()).map(String::trim).
                        forEach(s -> m.put(s, m.getOrDefault(s, 0.) + w.money/count));
                        },
                    (m1, m2) -> {throw new UnsupportedOperationException();})
            .entrySet().stream().map(e -> String.format("%s %.2f", e.getKey(), e.getValue())).sorted().
            forEachOrdered(s -> System.out.println(s));

            System.out.println(); //Blank line after an office.
            numOfficesRemaining--; //We handled an office.
        }
        inputScanner.close();
    }

    private static class OfficeWorker {
        public String us;
        public double money;
        public String[] others;

        private OfficeWorker(String us, double money, String[] others)
        {
            super();
            this.us = us;
            this.money = money;
            this.others = others;
        }
    }

}