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.Arrays;
 
public class Main{

  public static void main(String[] args) throws IOException {
    try ( BufferedReader br = new BufferedReader(new InputStreamReader(System.in)) ) {

      Boolean[][] checkCards = new Boolean[4][13];
      for( int i = 0; i < 4; i++ ) {
        Arrays.fill(checkCards[i], false);
      }
      String[] lines = br.readLine().split(" ");
      int n = Integer.parseInt(lines[0]);
      int a,b;

      for(int i = 0; i < n; i++) {
        lines = br.readLine().split(" ");
        a = suitToInt(lines[0]);
        b = Integer.parseInt(lines[1]);
        checkCards[a][b-1] = true;
      }

      for(int i = 0; i < 4; i++ ) {
        for( int j = 0; j < 13; j++ ) {
          if(!checkCards[i][j]) System.out.println(intToSuit(i) + " " + (j+1));
        }
      }
    }
  }

  public static int suitToInt( String suit ) {
    switch( suit ) {
      case "S": return 0;
      case "H": return 1;
      case "C": return 2;
      default : return 3;
    }
  }
  public static String intToSuit( int r ) {
    switch( r ) {
      case 0  : return "S";
      case 1  : return "H";
      case 2  : return "C";
      default : return "D";
    }
  }
}