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;

namespace ITP1
{
    class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());
            int[,] card = new int[4, 14];
            int rank;
            for (int i = 0; i < n; i++)
            {
                string[] input = Console.ReadLine().Split(' ');
                rank = int.Parse(input[1]);
                switch (input[0])
                {
                    case "S":
                        {
                            card[0, rank] = 1;
                            break;
                        }
                    case "H":
                        {
                            card[1, rank] = 1;
                            break;
                        }
                    case "C":
                        {
                            card[2, rank] = 1;
                            break;
                        }
                    case "D":
                        {
                            card[3, rank] = 1;
                            break;
                        }
                }

            }
            for (int i = 0; i <= 3 ; i++)
            {
                for (int k = 1; k <=13; k++)
                {
                    if (card[i,k] != 1)
                    {
                        switch (i)
                        {
                            case 0:
                                {
                                    Console.WriteLine("S "+k);
                                    break;
                                }
                            case 1:
                                {
                                    Console.WriteLine("H "+k);
                                    break;
                                }
                            case 2:
                                {
                                    Console.WriteLine("C "+k);
                                    break;
                                }
                            case 3:
                                {
                                    Console.WriteLine("D "+k);
                                    break;
                                }
                                    
                                

                        }
                    }
                }
            }

        }
    }
}