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
{
    enum Pattern { S, H, C, D, Length };

    static void Main()
    {
        int n=0;
        n = int.Parse(Console.ReadLine());
        string[] cardsInHand = new string[n];
        for (var i = 0; i < n; cardsInHand[i++] = Console.ReadLine()) ;

        for (var p = (Pattern)0; p < Pattern.Length; p++)
        {
            for (var i = 1; i <= 13; i++)
            {
                if (!HasFactor(p + " " + i, cardsInHand)) Console.WriteLine(p + " " + i);
            }
        }    
    }

    static bool HasFactor(string factor, string[] strings)
    {
       bool ans = false;
       foreach (var x in strings) if (x == factor) ans = true;
       return ans;
    }
}