#include <bits/stdc++.h>
typedef double db ;
using namespace std;
#define all(x) begin(x), end(x)
#define pb push_back
#define int long long
#define doub(k) printf("%.1lf\n", k) // setprecision(5)
typedef pair<int ,int > pll;typedef map<int , int > mll;typedef vector<int > vll;typedef vector<pll>vpll;
typedef set<int > sll;
const int nx[4] = {0, 0, 1, -1}, ny[4] = {1, -1, 0, 0};
const int dr[8] = {1,1,0,-1,-1,-1, 0, 1}, dc[8] = {0,1,1, 1, 0,-1,-1,-1};
//vector<char>v{'R','B','G'};
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
char grid[1000][1000];pll star,en;int vis[1000][1000];
int dis[10000][10000];
set<pair<int,int>>adj[1000][1000];int x,y;
void solve(int n ,int j){
for(int i=0;i<=1000;i++){
if(grid[n][j-i]!='#'&&grid[n][j-i-1]=='#'){
if(grid[n][j-i]=='#'){
continue;
}
if(n<=0||j-i<=0||n>x||j-i>y){
continue;
}
adj[n][j-i].insert({n,j});
adj[n][j].insert({n,j-i});
break;
}
}
for(int i=0;i<=1000;i++){
if(grid[n+i][j]!='#'&&grid[n+i+1][j]=='#'){
if(grid[n+i][j]=='#'){
continue;
}
if(n+i<=0||j<=0||n+i>x||j>y){
continue;
}
adj[n+i][j].insert({n,j});
adj[n][j].insert({n+i,j});
break;
}
for(int i=0;i<=10000;i++){
if(grid[n-i][j]=='#'){
continue;
}
if(grid[n-i][j]!='#'&&grid[n-i-1][j]=='#'){
if(n-i<=0||j<=0||n-i>x||j>y){
continue;
}
adj[n-i][j].insert({n,j});
adj[n][j].insert({n-i,j});
break;
}
}
for(int i=0;i<=10000;i++){
if(grid[n][j+i]=='#'){
continue;
}
if(grid[n][j+i]!='#'&&grid[n][j+i+1]=='#'){
if(n<=0||j+i<=0||n>x||j+i>y){
continue;
}
adj[n][j+i].insert({n,j});
adj[n][j].insert({n,j+i});
break;
}
}
for(int r=0;r<4;r++){
if(n+nx[r]<=0||n+nx[r]>x||j+ny[r]<=0||j+ny[r]>y){
continue;
}
if(grid[n+nx[r]][j+ny[r]]=='#'){
continue;
}
adj[n][j].insert({n+nx[r],j+ny[r]});
adj[n+nx[r]][j+ny[r]].insert({n,j});
}
}}
void bfs(int t,int tt){
queue<pair<int,int>>q;
q.push({t,tt});
dis[t][tt]=0;
while(!q.empty()){
int r=q.front().first;
int c=q.front().second;
//cout<<r<<" "<<c<<endl;
// cout<<dis[r][c];
q.pop();
for(auto u:adj[r][c]){
if(vis[u.first][u.second]){
continue;
}
vis[u.first][u.second]=1;
dis[u.first][u.second]=dis[r][c]+1;
q.push({u.first,u.second});
}
}
}
int32_t main()
{
ios_base::sync_with_stdio(false);cin.tie(NULL);
cin>>x;
cin>>y;
memset(grid,'#',sizeof(grid));
for(int i=1;i<=x;i++){
for(int j=1;j<=y;j++){
char t;cin>>t;
if(t=='S'){
star={i,j};
}
if(t=='C'){
en={i,j};
}
grid[i][j]=t;
}
}
for(int i=1;i<=x;i++){
for(int j=1;j<=y;j++){
if(grid[i][j]=='#'){
continue;
}
solve(i,j);
}
}
/*for(int i=1;i<=x;i++){
for(int j=1;j<=y;j++){
cout<<i<<" "<<j<<"<< ";
for(auto u:adj[i][j]){
cout<<u.first<<" "<<u.second<<"[";
}
cout<<endl;
}
}*/
bfs(star.first,star.second);
// for(int i=1;i<=x;i++){
// for(int j=1;j<=y;j++){
// cout<<i<<" "<<j<<" "<<dis[i][j]<<endl;
// }
//}
cout<<dis[en.first][en.second]<<endl;
return 0;
}
