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;
using System.Linq;

namespace Test
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            var allcards = new int[52];
            for (int i = 0; i < allcards.Length; i++)
            {
                allcards[i] = i + 1;
            }

            var num = int.Parse(Console.ReadLine());
            var findingcards = new int[num];
            for (int i = 0; i < num; i++)
            {
                var inputs = Console.ReadLine().Split(' ');
                findingcards[i] = ChangeStringToCard(inputs[0], inputs[1]);
            }

            Array.Sort(findingcards);
            var missingCards = allcards.Except(findingcards);
            foreach (var item in missingCards)
            {
                Console.WriteLine(ChangeCardToString(item));
            }
        }
        public static int ChangeStringToCard(string suit, string rank)
        {
            switch (suit)
            {
                case "S":
                    return int.Parse(rank);
                case "H":
                    return int.Parse(rank) + 13;
                case "C":
                    return int.Parse(rank) + 13*2;
                case "D":
                    return int.Parse(rank) + 13*3;
                default:
                    return 0;
            }
        }
        public static string ChangeCardToString(int card)
        {
            if (card <= 13) return string.Format("S {0}", card);
            else if ((13 < card) && (card <= (13 * 2))) return string.Format("H {0}", card - 13);
            else if ((13 * 2 < card) && (card <= (13 * 3))) return string.Format("C {0}", card - 13 * 2);
            else if ((13 * 3 < card) && (card <= (13 * 4))) return string.Format("D {0}", card - 13 * 3);
            else return null;
        }
    }
}