> #include<stdio.h>
> #include<memory.h>
> int loop, out, row,col;
> char map[12][12];
> int step[12][12];
> bool isok(int i,int j)
> {
> 	if(i>=0&&i<row&&j>=0&&j<col&&!step[i][j])
> 		return true;
> 	else
> 		if(step[i][j])
> 		{
> 			loop=out-step[i][j]+1;
> 			out-=loop;
> 		}
> 	return false;
> }
> void func(int i,int j)
> {
> switch (map[i][j])
> {
> case 'N':
> 	   if (isok(i-1,j))
> 	   {
> 		   out++;
> 		   step[i-1][j]=step[i][j]+1;
> 		   func(i-1,j);
> 	   }
> 	   break;
> case 'W':
> 	   if (isok(i,j-1))
> 	   {
> 		   out++;
> 		   step[i][j-1]=step[i][j]+1;
> 		   func(i,j-1);
> 	   }
> 	   break;
> case 'E':
> 	   if (isok(i,j+1))
> 	   {
> 		   out++;
> 		   step[i][j+1]=step[i][j]+1;
> 		   func(i,j+1);
> 	   }
> 	   break;
> case 'S':
> 	   if (isok(i+1,j))
> 	   {
> 		   out++;
> 		   step[i+1][j]=step[i][j]+1;
> 		   func(i+1,j);
> 	   }
> 	   break;
> }
> }
> int main()
> {
> 	int stand;
> 	int i,j;
> 	scanf("%d%d%d",&row,&col,&stand);
> 	while(row!=0&&col!=0)
> 	{
> 		loop=0;
> 		out=1;
>      memset(step,0,sizeof(int));
>      for(i=0;i<row;++i)
> 		 scanf("%s",map[i]);
> 	  step[0][stand-1]=1;
>       func(0,stand-1);
> 	  if(loop)
> 		  printf("%d step(s) before a loop of %d step(s)\n",out,loop);
> 	  else
> 		  printf("%d step(s) to exit\n",out);
>       scanf("%d%d%d",&row,&col,&stand);
> 	}
> 	return(0);
> }