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.Linq;
using System.Collections.Generic;
using System;

public class hello
{
    public static void Main()
    {
        var allcard = new List<int> { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 };
        var scard = new List<int>();
        var hcard = new List<int>();
        var ccard = new List<int>();
        var dcard = new List<int>();

        var n = int.Parse(Console.ReadLine().Trim());
        for (int i = 0; i < n; i++)
        {
            string[] line = Console.ReadLine().Trim().Split(' ');
            switch(line[0])
            {
                case "S":
                    scard.Add(int.Parse(line[1]));
                    break;
                case "H":
                    hcard.Add(int.Parse(line[1]));
                    break;
                case "C":
                    ccard.Add(int.Parse(line[1]));
                    break;
                 case "D":
                    dcard.Add(int.Parse(line[1]));
                    break;
                default:
                    break;
            }
        }
        var z = allcard.Except(scard).ToList();
        z.Sort();
        foreach (var ss in z)
            Console.WriteLine("S {0}", ss);
        var zz = allcard.Except(hcard).ToList();
        zz.Sort();
        foreach (var ss in zz)
            Console.WriteLine("H {0}", ss);
        var zzz = allcard.Except(ccard).ToList();
        zzz.Sort();
        foreach (var ss in zzz)
            Console.WriteLine("C {0}", ss);
        var zzzz = allcard.Except(dcard).ToList();
        zzzz.Sort();
        foreach (var ss in zzzz)
            Console.WriteLine("D {0}", ss);



    }
}