s = []
a = [[1 for j in range(8)] for i in range(8)]
for i in range(8):
    s.append(input())
for i in range(8):
    for j in range(8):
        if s[i][j] == 'B':
            a[i][j] = 0
            x = i - 1
            y = j - 1
            while x >= 0 and y >= 0 and s[x][y] == '*':
                a[x][y] = 0
                x -= 1
                y -= 1
            x = i - 1
            y = j + 1
            while x >= 0 and y < 8 and s[x][y] == '*':
                a[x][y] = 0
                x -= 1
                y += 1
            x = i + 1
            y = j + 1
            while x < 8 and y < 8 and s[x][y] == '*':
                a[x][y] = 0
                x += 1
                y += 1
            x = i + 1
            y = j - 1
            while x < 8 and y >= 0 and s[x][y] == '*':
                a[x][y] = 0
                x += 1
                y -= 1
        if s[i][j] == 'R':
            a[i][j] = 0
            x = i - 1
            while x >= 0 and s[x][j] == '*':
                a[x][j] = 0
                x -= 1
            x = i + 1
            while x < 8 and s[x][j] == '*':
                a[x][j] = 0
                x += 1
            y = j - 1
            while y >= 0 and s[i][y] == '*':
                a[i][y] = 0
                y -= 1
            y = j + 1
            while y < 8 and s[i][y] == '*':
                a[i][y] = 0
                y += 1
ans = 0
for i in range(8):
    ans += sum(a[i])
print(ans)