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;
using System.Collections.Generic;
using System.Linq;

namespace problem
{
  class Test
  {
    static void Main()
    {
      var S = new List<int>();
      var H = new List<int>();
      var C = new List<int>();
      var D = new List<int>();

      int i = int.Parse(Console.ReadLine());
      for (int a = 0; a < i; a++)
      {
        var s = Console.ReadLine().Split();
        switch (s[0])
        {
          case "S":
            S.Add(int.Parse(s[1]));
            break;
          case "H":
            H.Add(int.Parse(s[1]));
            break;
          case "C":
            C.Add(int.Parse(s[1]));
            break;
          case "D":
            D.Add(int.Parse(s[1]));
            break;
        }
      }
     // S.Sort(); H.Sort(); S.Sort(); D.Sort();

      for (int m = 0; m < 13; m++)
      {
        if (!S.Contains(m + 1)) Console.WriteLine("S {0}", m + 1);
      }
      for (int m = 0; m < 13; m++)
      {
        if (!H.Contains( m + 1)) Console.WriteLine("H {0}", m + 1);
      }
      for (int m = 0; m < 13; m++)
      {
        if (!C.Contains(m + 1)) Console.WriteLine("C {0}", m + 1);
      }
      for (int m = 0; m < 13; m++)
      {
        if (!D.Contains(m + 1)) Console.WriteLine("D {0}", m + 1);
      }
    }
  }
}