Problem:
Finding Missing Cards

Taro is going to play a card game. However, now he has only n cards, even though there should be 52 cards (he has no Jokers).

The 52 cards include 13 ranks of each of the four suits: spade, heart, club and diamond.

Input

In the first line, the number of cards n (n ≤ 52) is given.

In the following n lines, data of the n cards are given. Each card is given by a pair of a character and an integer which represent its suit and rank respectively. A suit is represented by 'S', 'H', 'C' and 'D' for spades, hearts, clubs and diamonds respectively. A rank is represented by an integer from 1 to 13.

Output

Print the missing cards. The same as the input format, each card should be printed with a character and an integer separated by a space character in a line.
Arrange the missing cards in the following priorities:

Print cards of spades, hearts, clubs and diamonds in this order.

If the suits are equal, print cards with lower ranks first.

Sample Input

47
S 10
S 11
S 12
S 13
H 1
H 2
S 6
S 7
S 8
S 9
H 6
H 8
H 9
H 10
H 11
H 4
H 5
S 2
S 3
S 4
S 5
H 12
H 13
C 1
C 2
D 1
D 2
D 3
D 4
D 5
D 6
D 7
C 3
C 4
C 5
C 6
C 7
C 8
C 9
C 10
C 11
C 13
D 9
D 10
D 11
D 12
D 13

Sample Output

S 1
H 3
H 7
C 12
D 8

Note

      解説

Solution in JAVA (judge verdict: Accepted)


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int cardCount = Integer.parseInt(reader.readLine());

        String[] marks = {"S", "H", "C", "D"};
        Map<String,List<Integer>> cards = new HashMap<String,List<Integer>>();
        for (String mark : marks) {
            cards.put(mark, new ArrayList<Integer>());
        }

        for (int i = 0; i < cardCount; i++) {
            String line = reader.readLine();
            String[] in = line.split(" ");
            if (cards.containsKey(in[0]))  {
                cards.get(in[0]).add(Integer.parseInt(in[1]));
            }
        }

        for (String mark : marks) {
            List<Integer> cardList = cards.get(mark);
            for (int i = 1; i <= 13; i++) {
                if (!cardList.contains(i)) {
                    System.out.println(mark + " " + i);
                }
            }
        }
   }
}