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;

namespace ITP1_6_B
{
    class Program
    {
        static void Main(string[] args)
        {
            Trump[] trump = new Trump[4];
            trump[0] = new Trump('S');
            trump[1] = new Trump('H');
            trump[2] = new Trump('C');
            trump[3] = new Trump('D');

            int havenumber = int.Parse(Console.ReadLine());
            for(int i = 0; i < havenumber; i++)
            {
                string[] input = Console.ReadLine().Split(' ');
                int mark = -1;
                switch (input[0])
                {
                    case "S":mark = 0; break;
                    case "H":mark = 1; break;
                    case "C":mark = 2; break;
                    case "D":mark = 3; break;
                    default: break;                           
                }
                if (mark > -1) trump[mark].SearchShortage(Convert.ToInt32(input[1]));
            }
            foreach (var t in trump)
                t.ShowCards();            
        }
    }
    class Trump
    {
        public char Mark { get; set; }
        private bool[] card = new bool[13];

        public Trump(char mark) { Mark = mark; }

        public void SearchShortage(int x) { card[x - 1] = true; }              
        public void ShowCards()
        {
            int number = 1;
            foreach(var j in card)
            {
                if (!j) Console.WriteLine(Mark + " " + number);
                number++;
            }
        }
    }
}