pushQueue(q, start);
      while (q->head != NULL)
      {
            q->head = frontQueue(q);
            for (int i = 1; i <= n; i++)
            {
                  if (map[n + 1][m + 1] == 1)
                        pushQueue(q, i);
                  if (map[n + 1][m + 1] == end)
                        break;
            }
            popQueue(q);
      }