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.Generic;
using System.Linq;

class Program {
  enum Kind {
    S, H, C, D
  }

  static void Main(string[] args) {

    var sc = new Scanner();
    int N = sc.NextInt();
    bool[,] have = new bool[4, 13];
    for(int i = 0; i < N; i++) {
      Kind k;
      string s = sc.Next();
      if(s == "S") k = Kind.S;
      else if(s == "H") k = Kind.H;
      else if(s == "C") k = Kind.C;
      else k = Kind.D;
      int j = sc.NextInt();
      j--;
      have[(int)k, j] = true;
    }

    for(int i = 0; i < 13; i++) {
      if(have[0, i] == false) Console.WriteLine("S " + (i + 1));
    }
    for(int i = 0; i < 13; i++) {
      if(have[1, i] == false) Console.WriteLine("H " + (i + 1));
    }
    for(int i = 0; i < 13; i++) {
      if(have[2, i] == false) Console.WriteLine("C " + (i + 1));
    }
    for(int i = 0; i < 13; i++) {
      if(have[3, i] == false) Console.WriteLine("D " + (i + 1));
    }
  }

  class Scanner {
    string[] inp;
    int ptr;

    public Scanner() {
      inp = new string[0];
      ptr = 0;
    }

    private void Fetch() {
      if (ptr >= inp.Length) {
        inp = Console.ReadLine().Split(' ');
        ptr = 0;
      }
    }

    public int NextInt() {
      Fetch();
      return int.Parse(inp[ptr++]);
    }

    public string Next() {
      Fetch();
      return inp[ptr++];
    }

    public double NextDouble() {
      Fetch();
      return double.Parse(inp[ptr++]);
    }
  }

}