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 JAVA (judge verdict: Wrong Answer)

import java.io.*;
import java.util.*;

class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        char[] suits=new char[]{'S','D','H','C'};
        Card[] cards=new Card[52];
        boolean[] flag=new boolean[52];
        Arrays.fill(flag, false);
        int cards_count=0;
        for(char c:suits){
            for(int i=1;i<=13;i++){
                cards[cards_count]=new Card(c,i);
                cards_count++;
            }
        }
        int n=Integer.parseInt(br.readLine());
        for(int i=0;i<n;i++){
            StringTokenizer st=new StringTokenizer(br.readLine());
            char suit=st.nextToken().charAt(0);
            int number=Integer.parseInt(st.nextToken());
            for(int j=0;j<52;j++){
                if(cards[j].number==number&&cards[j].suit==suit){
                    flag[j]=true;
                }
            }
        }
        for(int i=0;i<52;i++){
            if(!flag[i]){
                System.out.println(cards[i].suit+" "+cards[i].number);
            }
        }
    }
    
}

class Card{
    char suit;
    int number;
    Card(char s,int n){
        this.suit=s;
        this.number=n;
    }
}