#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "debug.h"
#else
#define dbg(...) 47
#endif
constexpr int dx[] = {1, -1, 0, 0};
constexpr int dy[] = {0, 0, 1, -1};
constexpr int inf = 1e9;
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n, m;
cin >> n >> m;
n += 2;
m += 2;
vector<string> s(n);
for (int i = 0; i < n; i++) {
s[i].assign(m, '#');
if (i > 0 && i < n - 1) {
string t;
cin >> t;
s[i] = '#' + t + '#';
}
}
vector<vector<int>> d(n, vector<int>(m, inf));
queue<array<int, 2>> q;
auto inside = [&](int i, int j) {
return (i >= 0 && i < n && j >= 0 && j < m && d[i][j] == inf);
};
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (s[i][j] == 'S') {
d[i][j] = 0;
q.push({i, j});
}
}
}
while (!q.empty()) {
auto [x, y] = q.front();
q.pop();
if (s[x][y] == 'C') {
cout << d[x][y] << '\n';
return 0;
}
for (int k = 0; k < 4; k++) {
int i = x + dx[k];
int j = y + dy[k];
if (s[i][j] == '#') {
int x_nw = x, y_nw = y;
while (s[x_nw - dx[k]][y_nw - dy[k]] != '#') {
x_nw -= dx[k];
y_nw -= dy[k];
}
if (d[x_nw][y_nw] == inf) {
d[x_nw][y_nw] = d[x][y] + 1;
q.push({x_nw, y_nw});
}
} else {
if (d[i][j] == inf) {
d[i][j] = d[x][y] + 1;
q.push({i, j});
}
}
}
}
return 0;
}
