Problem: There are some coins in the xy-plane. The positions of the coins are represented by a grid of characters with H rows and W columns. If the character at the i-th row and j-th column, s_{ij}, is `#`, there is one coin at point (i,j); if that character is `.`, there is no coin at point (i,j). There are no other coins in the xy-plane.

There is no coin at point (x,y) where 1\leq i\leq H,1\leq j\leq W does not hold. There is also no coin at point (x,y) where x or y (or both) is not an integer. Additionally, two or more coins never exist at the same point.

Find the number of triples of different coins that satisfy the following condition:

* Choosing any two of the three coins would result in the same Manhattan distance between the points where they exist.



Here, the Manhattan distance between points (x,y) and (x',y') is |x-x'|+|y-y'|. Two triples are considered the same if the only difference between them is the order of the coins.

Constraints

* 1 \leq H,W \leq 300
* s_{ij} is `#` or `.`.

Input

Input is given from Standard Input in the following format:


H W
s_{11}...s_{1W}
:
s_{H1}...s_{HW}


Output

Print the number of triples that satisfy the condition.

Examples

Input

5 4
#.##
.##.
#...
..##
...#


Output

3


Input

5 4
.##
.##.
...
..##
...#


Output

3


Input

13 27
......#.........#.......#..
...#.....###..
..............#####...##...
...#######......#...#######
...#.....#.....###...#...#.
...#######....#.#.#.#.###.#
..............#.#.#...#.#..
.#.#.#...###..
...........#...#...#######
..#######..#...#...#.....#
..#.....#..#...#...#.###.#
..#######..#...#...#.#.#.#
..........##...#...#.#####


Output

870

Solution (in PYTHON3):

Solution:
H, W = map(int, input().split())
I = [input() for _ in range(H)]
X = [[[0, 1][a=="#"] for a in inp] for inp in I]
k = 21
def r():
    global H, W, I
    I = ["".join([I[H - 1 - j][i] for j in range(H)]) for i in range(W)]
    H, W = W, H
def st1(s):
    return int(s.replace("#", "1" * k).replace(".", "0" * k), 2)
def st2(s):
    return int(s.replace("#", "0" * (k - 1) + "1").replace(".", "0" * k), 2)
def getsum(x):
    for i in range(8):
        x += x >> (k << i)
    return x & ((1 << k) - 1)

ans = 0
for _ in range(4):
    A1 = [st1(inp) for inp in I]
    A2 = [st1("".join([I[i][j] for i in range(H)])) for j in range(W)]
    B = [st2(inp[::-1]) for i, inp in enumerate(I)]
    for j in range(W):
        s, t = 0, 0
        m = (1 << j * k) - 1
        for i in range(H)[::-1]:
            s = ((B[i] >> (j + 1) * k) + (s << k)) & m
            t += A1[i] >> (W - j) * k & A2[j] >> (H - i) * k & s
        ans += getsum(t)
    r()
print(ans)