def main():
    n = int(input())
    S = [input() for _ in range(n)]
    T = []
    rep = -(n * (n-1) // 2 * n)
    #print(rep)
    for y in range(n):
        for x in range(2*n):
            if S[y][x] == "#":
                rep += 2*n-1-x
                if T and T[-1][0] == 0:
                    rep += y-T.pop()[1]
                else:
                    T.append((1, y))
        for _ in range(n):
            if T and T[-1][0] == 1:
                rep += y - T.pop()[1]
            else:
                T.append((0, y))
    return rep

print(main())