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;

class Program
{
    static void Main()
    {
            int i;
            int[] hart = new int[13];
            int[] club = new int[13];
            int[] spade = new int[13];
            int[] dia = new int[13];
            for (i = 0; i < 13; i++)
            {
                hart[i] = 0;
                club[i] = 0;
                spade[i] = 0;
                dia[i] = 0;
            }
            string len = Console.ReadLine();
            string[] mark = new string[int.Parse(len)];
            int[] number = new int[int.Parse(len)];
            for (i = 0; i < int.Parse(len); i++)
            {
                string inp = Console.ReadLine();
                string[] card = inp.Split(' ');
                mark[i] = card[0];//マーク
                number[i] = int.Parse(card[1]);//数字
                switch (mark[i])
                {
                    case "H":
                        hart[number[i]-1] = 1;
                        break;
                    case "C":
                        club[number[i]-1] = 1;
                        break;
                    case "S":
                        spade[number[i]-1] = 1;
                        break;
                    case "D":
                        dia[number[i]-1] = 1;
                        break;
                }
            }//shcd
            for (i = 0; i < 13; i++)
            {
                if (spade[i] == 0)
                {
                    Console.WriteLine("S {0}",i + 1);
                }
            }
            for (i = 0; i < 13; i++)
            {
                if (hart[i] == 0)
                {
                    Console.WriteLine("H {0}", i + 1);
                }
            }
            for (i = 0; i < 13; i++)
            {
                if (club[i] == 0)
                {
                    Console.WriteLine("C {0}", i + 1);
                }
            }
            for (i = 0; i < 13; i++)
            {
                if (dia[i] == 0)
                {
                    Console.WriteLine("D {0}", i + 1);
                }
            }
    }
}