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;
 
public class Main {
 
    public static void main(String[] args) throws NumberFormatException, IOException {
        // TODO Auto-generated method stub
        int n;
        String[] token;
        int rank;
        boolean[] S = new boolean[13]; 
        boolean[] H = new boolean[13]; 
        boolean[] C = new boolean[13]; 
        boolean[] D = new boolean[13];
         
        for (int i = 0; i < 13; i++) {
            S[i] = H[i] = C[i] = D[i] = false;
        }
         
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        n = Integer.parseInt(br.readLine());
         
        for (int i = 0; i < n; i++) {
            token = br.readLine().split(" ");
            rank = Integer.parseInt(token[1]);
            if (token[0].equals("S")) {
                S[rank - 1] = true;
            } else if (token[0].equals("H")) {
                H[rank - 1] = true;
            } else if (token[0].equals("C")) {
                C[rank - 1] = true;
            } else if (token[0].equals("D")) {
                D[rank - 1] = true;
            }
        }
         
        for (int i = 0; i < 13; i++) {
            if (!S[i]) System.out.println("S " + (i + 1));
        }
        for (int i = 0; i < 13; i++) {
            if (!H[i]) System.out.println("H " + (i + 1));
        }
        for (int i = 0; i < 13; i++) {
            if (!C[i]) System.out.println("C " + (i + 1));
        }
        for (int i = 0; i < 13; i++) {
            if (!D[i]) System.out.println("D " + (i + 1));
        }
    }
}