#include <iostream>
using namespace std;
int main(){
\x09string next;
\x09int depth = 0;
\x09cin >> next;
\x09for(int p = 0; p < next.length(); p++){
\x09\x09if(next.at(p) == 'f' || depth == 0){
\x09\x09\x09cout << '#';
\x09\x09\x09depth++;
\x09\x09}
\x09\x09else
\x09\x09\x09cout << endl << string(depth - 1, '.') << '#';
\x09}
\x09cout << endl;
}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).