#include <stdio.h>
#include <string.h>

#define up 1
#define down 0

char t[200][200];

int mf;
int n;

int isrectangle (int l, int start, int end, int dir)
{
  char *line;
  int i,j,m,w;
  int h = (end-start+1)/2;

  if (dir == up && (end-start)/2>l) return 0;
  for (i=0; i<h; i++)
    {
      m = start+h-1-i; w=m+(i-1)*2; line = t[l+h-i-1];
      for (j=m; j<=w; j++) if (line[j] != '-') return 0;
    }
  return 1;
}

void maxatseq (int l, int start, int end)
{
  int mp = end-start;
  int i,j;

  if ((mp&1)==0) mp++;
  for (i=mp; i>mf; i-=2)
    for (j=start; j<=end-i+1; j++)
      if (isrectangle (l, j, j+i-1, (l^j)&1)) mf = i;
}

void maxatline (int l)
{
  char *line = t[l], *s, *e;
  s = line+l;
  do
    {
      s = strchr (s, '-');
      if (!s) break;
      e = strchr (s, '#');
      if (!e) e = strchr (s, 0);
      maxatseq (l, s-line, e-line-1);
      s = e;
    } while (*s);
}

int main()
{
  int i,p=1;
  FILE *fi = fopen("triangle.in","r");

  
  while (1)
    {
      fscanf(fi,"%i\n",&n);
      if (n==0) break;
      for (i=0; i<n; i++)
	{
	  fgets(t[i],200,fi);
	  t[i][2*n-i-1] = 0;
	}
      mf = 1;
      for (i=0; i<n; i++)
	{
	  maxatline(i);
	}
      mf = (mf+1)/2;
      printf ("Triangle #%i\n"
	      "The largest triangle area is %i.\n\n",p,mf*mf);
      p++;
    }
  fclose(fi);
  return 0;
}