HDU 1097 A Hard Puzzle

在hdu1061的基础上改了一下。。。

#include<stdio.h>
int main()
{
   int a[10][4] = {{0},{1},{6,2,4,8},{1,3,9,7},{6,4},{5},{6},
                  {1,7,9,3},{6,8,4,2},{1,9}};
   int d,n,b;
   while(scanf("%d %d",&n,&b)!=EOF)
   {
      d = n % 10;
      if(d == 0||d == 1||d == 5||d == 6)
         printf("%d\n",d);
      else if(d == 4||d == 9)
         printf("%d\n",a[d][b % 2]);
      else if(d == 2||d == 3||d == 7||d == 8)
         printf("%d\n",a[d][b % 4]);
   }
   return 0;
}