h,w=map(int,input().split())
a=[input()for i in range(h)]
g=[[[0]*20 for i in range(w)]for j in range(h)]
g[0][0][1] = 1
for i in range(h):
	for j in range(w):
		if a[i][j]=='#': continue
		if i>=1:
			for k in range(20):
				t=k+(a[i][j]=='o')*2-1
				if 0<=t<20:
					g[i][j][t] += g[i-1][j][k]
		if j>=1:
			for k in range(20):
				t=k+(a[i][j]=='o')*2-1
				if 0<=t<20:
					g[i][j][t] += g[i][j-1][k]

print(sum(g[h-1][w-1]))