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_6_B
{
    class Program
    {
        static void Main(string[] args)
        {
            int num = int.Parse(Console.ReadLine());

            int[] s = new int[13];
            int[] h = new int[13];
            int[] c = new int[13];
            int[] d = new int[13];
            for (int j = 0; j < num; j++)
            {
                string[] input = Console.ReadLine().Split(' ');
                int value = int.Parse(input[1]) - 1;

                switch (input[0])
                {
                    case "S":
                        s[value] = 1;
                        break;
                    case "H":
                        h[value] = 1;
                        break;
                    case "C":
                        c[value] = 1;
                        break;
                    case "D":
                        d[value] = 1;
                        break;
                }
            } 

            for (int S=0; S<13; S++)
            {
                if (s[S] != 1) Console.WriteLine("S {0}", S + 1);
            }

            for (int H = 0; H < 13; H++)
            {
                if (h[H] != 1) Console.WriteLine("H {0}", H + 1);
            }

            for (int C = 0; C < 13; C++)
            {
                if (c[C] != 1) Console.WriteLine("C {0}", C + 1 );
            }

            for (int D = 0; D < 13; D++)
            {
                if (d[D] != 1) Console.WriteLine("D {0}", D + 1);
            }
            //Console.WriteLine();
        }
    }
}