#include <bits/stdc++.h>
using namespace std;
const int mod = 1e9 + 7;
const int INF = 1e9;
int n, m;
char mt[1505][1505];
const int dx[] = {0, 0, 1, -1}, dy[] = {1, -1, 0, 0};
bool flag = false;
pair<int, int> vis[1505][1505];
void dfs(int x, int y) {
  int ax = (x % n + n) % n, ay = (y % m + m) % m;
  if (mt[ax][ay] == '#') return;
  if (vis[ax][ay] != make_pair(INF, INF) && vis[ax][ay] != make_pair(x, y)) {
    flag = true;
    return;
  }
  if (vis[ax][ay] != make_pair(INF, INF)) return;
  vis[ax][ay] = make_pair(x, y);
  for (int i = 0; i < 4; i++) dfs(x + dx[i], y + dy[i]);
}
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n >> m;
  int sx, sy;
  for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) vis[i][j] = make_pair(INF, INF);
  for (int i = 0; i < n; i++) {
    cin >> mt[i];
    for (int j = 0; j < m; j++)
      if (mt[i][j] == 'S') sx = i, sy = j;
  }
  dfs(sx, sy), cout << (flag == true ? "Yes" : "No");
  return 0;
}
