import java.util.*;

public class Task1100 {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        int nTeams = Integer.parseInt(scanner.nextLine());
        LinkedHashMap<Integer, Byte> map = new LinkedHashMap<>();

        for (int i = 0; i < nTeams; i++) {
            int teamNumber = scanner.nextInt();
            byte score = scanner.nextByte();
            map.put(teamNumber, score);
        }

        sortByValue(map);

        for (Integer key : map.keySet()) {
            System.out.printf("%d %d\n", key, map.get(key));
        }
    }

    public static void sortByValue(LinkedHashMap<Integer, Byte> elements) {

        LinkedHashMap<Integer, Byte> result = new LinkedHashMap<>();
        Set<Map.Entry<Integer, Byte>> entries = elements.entrySet();
        List<Map.Entry<Integer, Byte>> listOfEntries = new ArrayList<>(entries);

        Comparator<Map.Entry<Integer, Byte>> comparator = new Comparator<Map.Entry<Integer, Byte>>() {
            @Override
            public int compare(Map.Entry<Integer, Byte> e1, Map.Entry<Integer, Byte> e2) {
                return e2.getValue().compareTo(e1.getValue());
            }
        };

        Collections.sort(listOfEntries, comparator);

        for (Map.Entry<Integer, Byte> entry : listOfEntries) {
            result.put(entry.getKey(), entry.getValue());
        }

        elements.clear();

        for (Integer key : result.keySet()) {
            elements.put(key, result.get(key));
        }
    }

}