#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  int h, w;
  cin >> h >> w;
  vector Grid(h, vector<char>(w));
  rep(i, h) rep(j, w) cin >> Grid[i][j];
  vector dp(h, vector(w, vector<int>(300, 0)));
  dp[0][0][1] = 1;
  rep(i, h) rep(j, w) rep(k, 300) {
    if (i + 1 < h) {
      if (Grid[i + 1][j] == 'o') {
        dp[i + 1][j][k + 1] += dp[i][j][k];
      }
      if (Grid[i + 1][j] == 'x' && k > 0) {
        dp[i + 1][j][k - 1] += dp[i][j][k];
      }
    }
    if (j + 1 < w) {
      if (Grid[i][j + 1] == 'o') {
        dp[i][j + 1][k + 1] += dp[i][j][k];
      }
      if (Grid[i][j + 1] == 'x' && k > 0) {
        dp[i][j + 1][k - 1] += dp[i][j][k];
      }
    }
  }
  int ans = 0;
  rep(i, 300) ans += dp[h - 1][w - 1][i];
  cout << ans << endl;
  return 0;
}