import typing
import sys
input = lambda: sys.stdin.readline().strip()
inf = 10**18
mod = 998244353

def solve():
  H, W = map(int, input().split())
  grid = []
  for _ in range(H):
    grid.append(input())
  dp = [[[0 for _ in range(H*W+1)] for _ in range(W)] for _ in range(H)]
  dp[0][0][1] = 1
  for h in range(H):
    for w in range(W):
      if grid[h][w] == 'x':
        for k in range(H*W):
          if h > 0:
            dp[h][w][k] += dp[h-1][w][k+1]
          if w > 0:
            dp[h][w][k] += dp[h][w-1][k+1]
      elif grid[h][w] == 'o':
        for k in range(1,H*W+1):
          if h > 0:
            dp[h][w][k] += dp[h-1][w][k-1]
          if w > 0:
            dp[h][w][k] += dp[h][w-1][k-1]  
      else:
        pass
  print(sum(dp[-1][-1]))
def main():
  t = 1
  for _ in range(t):
    solve()
main()