fun main() {
  var input = generateSequence { readLine() }
    .map { it.toCharArray().toMutableList() }
    .toList()

  val dx = listOf(1, -1, 0, 0, -1, -1, 1, 1)
  val dy = listOf(0, 0, 1, -1, -1, 1, -1, 1)
  while (true) {
    val next = input.map { it.toMutableList() }
    var changed = false
    for (i in input.indices) {
      for (j in input[i].indices) {
        var occupied = 0
        for (k in dx.indices) {
          var x = i + dx[k]
          var y = j + dy[k]
          try {
            while (true) {
              if (input[x][y] == '#') {
                occupied++
                break
              } else if(input[x][y] == 'L') {
                break
              }
              x += dx[k]
              y += dy[k]
            }
          } catch (e: Exception) {}
        }

        if (input[i][j] == 'L' && occupied == 0) {
          changed = true
          next[i][j] = '#'
        } else if (input[i][j] == '#' && occupied >= 5) {
          changed = true
          next[i][j] = 'L'
        }
      }
    }

    input = next
    if (!changed) break
  }

  input.map { row -> row.count { it == '#' } }.sum().let(::println)
}