MOD=998244353

n,m,k = map(int,input().split())
l = [input() for _ in range(n)]
dp = [[0]*m for i in range(n)]

for i in range(n):
    for j in range(m):
        if i == 0 or j == 0:
            dp[i][j] = 1
        else:
            if l[i][j] == '#':
                dp[i][j] = 0
            else:
                dp[i][j] = dp[i][j-1] + dp[i-1][j]
        dp[i][j] %= MOD
print(dp[-1][-1])