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

namespace ITP1_6B
{
    class Program
    {
        static void Main(string[] args)
        {
            var cardCount = int.Parse(Console.ReadLine());

            var cards = new int[4];

            for (var i = 0; i < cardCount; ++i)
            {
                var words = Console.ReadLine().Split(' ');

                var cardType = -1;
                switch (words[0])
                {
                    case "S": cardType = 0; break;
                    case "H": cardType = 1; break;
                    case "C": cardType = 2; break;
                    case "D": cardType = 3; break;
                }
                if (cardType < 0)
                {
                    continue;
                }

                cards[cardType] |= 1 << (int.Parse(words[1]) - 1);
            }

            for (var i = 0; i < cards.Length; ++i) 
            {
                var cardType = "";
                switch (i) {
                    case 0: cardType = "S"; break;
                    case 1: cardType = "H"; break;
                    case 2: cardType = "C"; break;
                    case 3: cardType = "D"; break;
                }

                var bitOfNumber = 1;
                for (var h = 0; h < 13; ++h)
                {
                    if ((cards[i] & bitOfNumber) == 0)
                    {
                        Console.WriteLine("{0} {1}", cardType, h + 1);
                    }
                    bitOfNumber <<= 1;
                }
            }


        }
    }
}