UVa 10205 Stack 'em Up

#include <stdio.h>#include <string.h>#define CARDNUM 52char Values[13][10] = {"2","3","4","5","6","7","8","9","10","Jack","Queen","King","Ace"};char Suits[4][10] = {"Clubs","Diamonds","Hearts","Spades"};void display(int card){ printf("%s of %s\n", Values[(card-1)%13],Suits[(card-1)/13]);}void shuffle(int cards[CARDNUM], int shuffle[CARDNUM]){ int temp[CARDNUM]; int i; for(i=0; i<CARDNUM; i++) temp[i] = cards[i]; for(i=0; i<CARDNUM; i++) cards[i] = temp[shuffle[i]-1];}int main(){ int cards[CARDNUM]; int shuffles[100][CARDNUM]; int apply; int cases, num, i, j; char temp[10]; scanf("%d",&cases); while(cases--)  {for(i=0; i<CARDNUM; i++) cards[i] = i+1;scanf("%d",&num);for(i=0; i<num; i++) for(j=0; j<CARDNUM; j++) scanf("%d",&shuffles[i][j]);getchar();while(gets(temp)!=NULL && temp[0]!='\0'){sscanf(temp,"%d",&apply);shuffle(cards,shuffles[apply-1]);}         for(i=0; i<CARDNUM; i++)display(cards[i]);if(cases) printf("\n");} return 0;}