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]) {

    val numList = (1 to 13).toSet
    val typeList: List[String] = List("S", "H", "C", "D")

    var list: List[String] = List()
    for (line <- scala.io.Source.stdin.getLines()) {
      list = list :+ line
    }
    list = list.slice(1, list.length)

    var cardMap = Map[String, Set[Int]]()

    for (line <- list) {
      var Array(k, v) = line.split(" ")
      var g: Set[Int] = cardMap.getOrElse(k, Set())
      if (g == Set()) {
        cardMap += k -> Set(v.toInt)
      } else {
        g = g + v.toInt
        cardMap += k -> g
      }
    }

    for (t <- typeList) {
      for (dv <- (numList &~ cardMap.get(t).get).toList.sorted(Ordering[Int])) println(t + " " + dv)
    }
  }
}