PAT 1042 Shuffling Machine

#include <cstdio>
#include <cstdlib>
#include <vector>

using namespace std;

char tbl[5] = {‘S‘, ‘H‘, ‘C‘, ‘D‘, ‘J‘};

void shuffle(vector<char> &card, vector<char> &rnd) {
    int rlen= rnd.size();
    vector<char> tmp(card.size(), 0);
    for (int i=0; i<rlen; i++) {
        tmp[rnd[i]] = card[i];
    }
    card = tmp;
}

void print_card(char card) {
    printf("%c%d", tbl[card/13], card % 13 + 1);
} 

int main() {
    int times = 0, r = 0;
    vector<char> rnd(54, 0);
    vector<char> card(54, 0);
    for (int i=0; i<54; i++) {
        card[i] = i;
    }
    scanf("%d", &times);
    for (int i=0; i<54; i++) {
        scanf("%d", &r);
        rnd[i] = r - 1;
    }
    for (int i=0; i<times; i++) {
        shuffle(card, rnd);
    }
    print_card(card[0]);
    for (int i=1; i<54; i++) {
        printf(" ");
        print_card(card[i]);
    }
    return 0;
}