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)

import scala.io.StdIn._
import scala.collection._

object Main {
  def main(args: Array[String]) {
    val cardNum = readInt()
    val sList, hList, cList, dList = mutable.ArrayBuffer.range(1, 13 + 1)
    val cardListMap = mutable.Map("S" -> sList, "H" -> hList, "C" -> cList, "D" -> dList)

    checkCards(readLine(), cardNum)
    missingCards

    def checkCards(input: String, limit: Int, i: Int = 0): Unit ={
      if(i < limit) {
        val Array(suit, num) = input.split(" ")
        suit match {
          case "S" => deleteFindCard("S", num)
          case "H" => deleteFindCard("H", num)
          case "C" => deleteFindCard("C", num)
          case "D" => deleteFindCard("D", num)
        }
        checkCards(readLine(), limit, i + 1)
      }
    }

    def deleteFindCard(suit: String, n: String): Unit ={
      cardListMap(suit)(n.toInt - 1) = 0
    }

    def missingCards: Unit = {
      val sMissingCards = findMissingCards("S")
      val hMissingCards = findMissingCards("H")
      val cMissingCards = findMissingCards("C")
      val dMissingCards = findMissingCards("D")

      missingCardsPrintln("S", sMissingCards)
      missingCardsPrintln("H", hMissingCards)
      missingCardsPrintln("C", cMissingCards)
      missingCardsPrintln("D", dMissingCards)
    }

    def findMissingCards(suit: String): Seq[Int] = {
      val notFindCards = cardListMap(suit).filter(i => i > 0)
      if(notFindCards.nonEmpty) notFindCards else Seq()
    }

    def missingCardsPrintln(m: String, s: Seq[Int]): Unit = {
      s.foreach(i => println(s"$m $i"))
    }
  }
}