import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;

public class Nuts {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int number = Integer.parseInt(sc.nextLine());

		ArrayList<String> inputArrayList = new ArrayList<String>();
		for (int i = 0; i < number; i++) {
			inputArrayList.add(sc.nextLine());
		}

		LinkedHashMap<String, String> products = new LinkedHashMap<String, String>();
		Map<String, LinkedHashMap<String, String>> companies = new TreeMap();

		for (int i = 0; i < inputArrayList.size(); i++) {

			String[] splittedLine = inputArrayList.get(i).split("\\s+");
			if (!companies.containsKey(splittedLine[0])) {
				companies.put(splittedLine[0],
						new LinkedHashMap<String, String>());
				companies.get(splittedLine[0]).put(splittedLine[1],
						splittedLine[2]);
			} else {
				if (!companies.get(splittedLine[0])
						.containsKey(splittedLine[1])) {
					companies.get(splittedLine[0]).put(splittedLine[1],
							splittedLine[2]);
				} else {
					String currentValue = companies.get(splittedLine[0]).get(
							splittedLine[1]);
					int currentValueAsInt = extractIntegerFromString(currentValue);
					int nextValueAsInt = extractIntegerFromString(splittedLine[2]);
					int sumOfCurrentAndNextValue = currentValueAsInt + nextValueAsInt;
					String toPutString = concatenateSymbols(sumOfCurrentAndNextValue, "kg");
					companies.get(splittedLine[0]).put(splittedLine[1], toPutString);

				}
			}
		}

		for (String string : companies.keySet()) {
			System.out.print(string + ": ");
			printProducts(companies.get(string));
			System.out.println();
		}

	}

	private static String extractCompanyFromInput(String companyWithProducts) {
		String[] companyWithProductsToArray = companyWithProducts.split(" ");
		String company = companyWithProductsToArray[0];
		return company;
	}

	private static String extractProductFromInput(String companyWithProducts) {
		String[] companyWithProductsToArray = companyWithProducts.split(" ");
		String product = companyWithProductsToArray[1];
		return product;
	}

	private static String extractQuantityFromInput(String companyWithProducts) {
		String[] companyWithProductsToArray = companyWithProducts.split(" ");
		String quantity = companyWithProductsToArray[2];
		return quantity;
	}

	private static void printProducts(LinkedHashMap<String, String> products) {
		String productsToString = products.toString();
		productsToString = productsToString.replaceAll("[\\{\\}]+", "");
		productsToString = productsToString.replaceAll("=", "-");
		System.out.print(productsToString);
	}

	public static LinkedHashMap<String, String> getNutsQuantity(String nut,
			String quantity, LinkedHashMap<String, String> products) {

		if (products.containsKey(nut)) {
			String oldQuantity = products.get(nut);
			int oldQuantityInt = extractIntegerFromString(oldQuantity);
			int quantityInt = extractIntegerFromString(quantity);
			int newQuantityInt = oldQuantityInt + quantityInt;
			String newQuantityString = concatenateSymbols(newQuantityInt, "kg");
			products.put(nut, newQuantityString);
		} else {
			products.put(nut, quantity);
		}

		return products;
	}

	public static int extractIntegerFromString(String stringWithInteger) {

		String theIntString = stringWithInteger.substring(0,
				stringWithInteger.length() - 2);
		int theInt = Integer.parseInt(theIntString);
		return theInt;
	}

	public static String concatenateSymbols(int theInt, String theString) {
		String result = "";
		result = Integer.toString(theInt) + theString;
		return result;
	}

}