public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        HashMap<String, Integer> map = new HashMap<>();
        while (true) {
            String r = reader.readLine();
            if (r.isEmpty()) break;
            Integer n = Integer.parseInt(r);
            if (n == null) break;
            String i = reader.readLine();
            map.put(i, n);
            if (i.isEmpty()) {
                break;
            }
        }
        for (Map.Entry<String, Integer> pair : map.entrySet()) {
            System.out.println(pair.getValue() + " " + pair.getKey());
        }
    }
}