moveX = (+1, +1, +1, +0, +0, -1, -1, -1)
moveY = (-1, +0, +1, -1, +1, -1, +0, +1)

while True:
  n, m = map(int, input().split())
  if n == 0 and m == 0:
    break

  def floodfill(matrix: list, i: int, j: int) -> None:
    if i < 0 or i >= n or j < 0 or j >= m: return
    if matrix[i][j] == '*': return
    matrix[i][j] = '*'
    for move in range(8):
      floodfill(matrix, i+moveX[move], j+moveY[move])

  count = 0
  matrix = [['' for i in range(m)] for i in range(n)]
  for i in range(n):
    matrix[i] = list(input())

  for i in range(n):
    for j in range(m):
      if matrix[i][j] != '*':
        floodfill(matrix, i, j)
        count += 1
  print(count)