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 Scala (judge verdict: Accepted)

object Main {

    def main(args: Array[String]): Unit = {
        val sc = new java.util.Scanner(System.in)
        val n = sc.nextInt
        val a = Array.fill(n)( (sc.next, sc.nextInt) )
        val found = a.map{
            case (suit, num) => cards_toIndex(suit, num)
        }.toSet

        ((0 to 51).toSet &~ found).toSeq.sorted.foreach{
            i => {
                i/13 match {
                    case 0 => println("S " + (i%13+1))
                    case 1 => println("H " + (i%13+1))
                    case 2 => println("C " + (i%13+1))
                    case 3 => println("D " + (i%13+1))
                }
            }
        }
    }

    // 0 to 51
    def cards_toIndex(suit: String, num: Int): Int = {
        suit match {
            case "S" => num-1
            case "H" => 13+num-1
            case "C" => 26+num-1
            case "D" => 39+num-1
            case _ => -1
        }
    }

}