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1239. Counting Stars

Ограничения: время – 500ms/1000ms, память – 64MiB Ввод: input.txt или стандартный ввод Вывод: output.txt или стандартный вывод copy
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People generally don't care to give attention to stars in a moonlit night. In most cases the attention goes towards the moon. Sadly, you have to write a program now that can count the stars in the sky. For this problem a sky is a two dimensional grid. Empty pixel is denoted by a '.' (ASCII value 46) and a non-empty pixel is denoted by a '*' (ASCII value 42). As a star is a very small object so it cannot occupy more than two adjacent pixels and in our sky two stars are never adjacent. So three or more adjacent non-empty pixels can denote some larger objects like moon, comet, sun or UFOs but they never represent a star. All the eight possible pixels around a pixel are adjacent to it. In the figure below the black pixel at the center have eight adjacent pixels. Of them three pixels are non-empty.
The input file contains at most 100 sets of inputs. The description of each set is given below:
Each set starts with two integer number `r` and `c` (`1\ ≤\ r,\ c\ ≤\ 100`), which indicates the row and column number of the image to follow. Next `r` rows describe the sky as mentioned in the problem statement. Input is terminated by a line containing two zeroes.
For each set of input produce one line of output. This line contains a decimal integer which denotes the number of stars in the given sky.

Sample Input

5 5
4 4
0 0

Sample Output