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 C# (judge verdict: Accepted)

using System;
class aoj{
  public static void Main(){
    bool[,] card = new bool[4,13];
    for(int i=0; i<4; i++){
      for(int j=0; j<13; j++){
        card[i,j]=true;
      }
    }
    int n =  int.Parse(Console.ReadLine());
    for(int i=0; i<n; i++){
      String[] str = Console.ReadLine().Split(' ');
      String temp = str[0];
      char c = temp[0];
      int number = int.Parse(str[1]);
      switch(c){
        case 'S':
          card[0,number-1] = false;
          break;
        case 'H':
          card[1,number-1] = false;
          break;
        case 'C':
          card[2,number-1] = false;
          break;
        case 'D':
          card[3,number-1] = false;
          break;
        default:
          break;
      }
    }
    for(int i=0; i<4; i++){
      for(int j=0; j<13; j++){
        if(card[i,j]){
          switch(i){
            case 0:
              Console.WriteLine("S {0}",j+1);
              break;
            case 1:
              Console.WriteLine("H {0}",j+1);
              break;
            case 2:
              Console.WriteLine("C {0}",j+1);
              break;
            case 3:
              Console.WriteLine("D {0}",j+1);
              break;
            default:
              break;
          }
        }
      }
    }
  }
}