Lehmät

[height, width] = [int(x) for x in input().split(" ")]
rows = [input() for x in range(height)]

min_y = min([y for y in range(height) if rows[y].count("*") > 0])
max_y = max([y for y in range(height) if rows[y].count("*") > 0])

min_x = min([x for x in range(width) if rows[min_y][x] == "*"])
max_x = max([x for x in range(width) if rows[min_y][x] == "*"])

cow_count = 0
for x in range(min_x, max_x + 1):
    for y in range(min_y, max_y + 1):
        if rows[y][x] == "@":
            cow_count += 1

print(cow_count)