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.Text;

namespace AOJ
{
    class Program
    {
        // 実際にはこんな時間のかかる構成にはせずdictionary等々を使用する
        class Card
        {
            public string suit;
            public int rank;

            public override bool Equals(object obj)
            {
                var rhs = (Card)obj;
                return suit.Equals(rhs.suit) && rank.Equals(rhs.rank);
            }
        }
        class Deck
        {
            List<Card> cards = new List<Card>();

            static Deck FullDeck()
            {
                var deck = new Deck();
                var suits = new List<string> { "S", "H", "C", "D" };
                foreach (var suit in suits)
                {
                    for (int i = 1; i <= 13; ++i)
                    {
                        deck.cards.Add(new Card { suit = suit, rank = i });
                    }
                }
                return deck;
            }

            public void AddCard(string suit, string rank)
            {
                cards.Add(new Card { suit = suit, rank = int.Parse(rank) });
            }

            public static List<Card> GetMissingCards(ref Deck yours)
            {
                var missing = new Deck();

                var full = FullDeck();
                foreach (var test in full.cards)
                {
                    bool isMissing = true;
                    foreach (var yourCard in yours.cards)
                    {
                        if (yourCard.Equals(test))
                        {
                            isMissing = false;
                            break;
                        }
                    }
                    if (isMissing)
                    {
                        missing.cards.Add(test);
                    }
                }

                return missing.cards;
            }
        }
        static void Main(string[] args)
        {
            var inputFirstLine = Console.In.ReadLine();
            var cardCount = int.Parse(inputFirstLine);

            var deck = new Deck();

            for (int icard = 0; icard < cardCount; ++icard)
            {
                var inputLine = Console.In.ReadLine();
                var inputs = inputLine.Split(new char[] { ' ', '\t', '　' });
                if (inputs.Length != 2)
                {
                    return;
                }

                deck.AddCard(inputs[0], inputs[1]);
            }

            var missing = Deck.GetMissingCards(ref deck);
            foreach (var card in missing)
            {
                Console.WriteLine("{0} {1}", card.suit, card.rank);
            }
        }
    }
}