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;

public class Class1
{
		
		
	public static void Main()
	{   	
		int n = int.Parse(Console.ReadLine());
		int[,] cards = new int[4, 13];
		for (int i = 0; i < 4; i++) {   			
			for (int j = 0; j < 13; j++) {
				cards[i, j] = 0;
			}		
		}
			
		for (int i = 0; i < n; i++) {			
			string dataSet = Console.ReadLine();
			string[] data = dataSet.Split();
			int num = int.Parse(data[1])-1;
			switch (data[0]) {
				case "S":
					cards[0, num] = 1;
					break;
				case "H":
					cards[1, num] = 1;
					break;
				case "C":
					cards[2, num] = 1;
					break;
				case "D":
					cards[3, num] = 1;
					break;
			}
		}
		for (int i = 0; i < 4; i++) {			
			for (int j = 0; j < 13; j++) {     
				if (cards[i, j] == 0) {
					switch (i) {
						case 0:
							Console.WriteLine("S {0}", j+1);
							break;
						case 1:
							Console.WriteLine("H {0}" , j+1);			 				                  
							break;
						case 2:
							Console.WriteLine("C {0}" ,j+1);	
							break;
						case 3:
							Console.WriteLine("D {0}", j+1);	
							break;
					}
				}
			}
			
		}
	}
}