#!/usr/bin/python3

import bisect
import collections
import heapq
import itertools
import math
import os
import sys


def main():
    h, w = read_ints()
    A = [inp() for _ in range(h)]

    n = h + w - 1
    dp = list3d(h, w, n + 1, 0)
    dp[0][0][1] = 1
    for y in range(h):
        for x in range(w):
            for c in range(n):
                v = dp[y][x][c]
                if x + 1 < w:
                    ch = A[y][x + 1]
                    if ch == 'o':
                        dp[y][x + 1][c + 1] += v
                    elif ch == 'x' and c > 0:
                        dp[y][x + 1][c - 1] += v

                if y + 1 < h:
                    ch = A[y + 1][x]
                    if ch == 'o':
                        dp[y + 1][x][c + 1] += v
                    elif ch == 'x' and c > 0:
                        dp[y + 1][x][c - 1] += v

    ans = 0
    for c in range(n + 1):
        ans += dp[h - 1][w - 1][c]
    print(ans)


###############################################################################

DEBUG = 'DEBUG' in os.environ


def inp():
    return sys.stdin.readline().rstrip()


def read_int():
    return int(inp())


def read_ints():
    return [int(e) for e in inp().split()]


def list2d(d1, d2, init=None):
    return [[init] * d2 for _ in range(d1)]


def list3d(d1, d2, d3, init=None):
    return [[[init] * d3 for _ in range(d2)] for _ in range(d1)]


def list4d(d1, d2, d3, d4, init=None):
    return [[[[init] * d4 for _ in range(d3)] for _ in range(d2)]
            for _ in range(d1)]


def debug(fmt, *args):
    if DEBUG:
        if args:
            print(fmt.format(*args), file=sys.stderr)
        else:
            print(fmt, file=sys.stderr)


if __name__ == '__main__':
    main()