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)

//ITP1_6_B
//????????????  ???

using System;
using System.Collections.Generic;

class ITP1_6_B
{
    static void Main(string[] args)
    {
        //n??????????????°?????£??\

        int n = int.Parse(Console.ReadLine());

        bool[,] barray = new bool[4, 13];
        string[] sarray = new string[n];

        //n???sarray???????????£??\

        for (int i = 0; i < n; i++)
        {
            sarray[i] = (Console.ReadLine());

            //????????§????????????st???????´???????barray?????????????????´??????true????????????

            string[] st = sarray[i].Split(' ');
            barray[ch(st[0]), int.Parse(st[1]) - 1] = true;

        }

        //?¶???????????????????????????????????????????
        for (int row = 0;row < 4; row++)
        {
            for(int columm = 0;columm < 13; columm++)
            {
                if(barray[row, columm] == false)
                    Console.WriteLine(ch(row) + " "+ (columm+1));
            }
        }

    }

    private static int ch(string v)
    {
        switch (v)
        {
            case "S":
                return 0;

            case "H":
                return 1;

            case "C":
                return 2;

            case "D":
                return 3;

            default:
                break;
        }

        return 0;
    }

    private static string ch(int v)
    {
        switch (v)
        {
            case 0:
                return "S";

            case 1:
                return "H";

            case 2:
                return "C";

            case 3:
                return "D";

            default:
                break;
        }

        return "error";
    }

}

/*class card
{
    public int num;
    public string mark;


}*/