Language: C++

#include <bits/stdc++.h>

int main(){
    int n,a,b,c,d,rock=0,isjumpover=0;
    string s;
    cin>>n>>a>>b>>c>>d;
    cin>>s;
    if(c == d || s[c] == '#' || s[d] == '#'){//the difficult part is when c > d
        cout<<"No1"<<endl;
        return 0;
    }
    if(c > d)
    {
        int success = 0;
        for(int i=a;i<c;i++){
//            if(i==8){
//                cout<<b<<endl;
//                cout<<s<<endl;
//                cout<<rock<<endl;
//                system("pause");
//            }
            if(s[i] == '#')//A#
            {
                rock++;
            }
            else if(!isjumpover && (i == b-1))
            {
                if(rock == 0){//AB
                    if(s[b] == '.')//AB.
                    {
                        i = b-1;//++ operation after
                        isjumpover = 1;
                    }
                    else if(s[b] == '#'){//AB#
                        if(s[b+1] == '#'){//AB##
//                            cout<<"No3"<<endl;
                            cout<<"No"<<endl;
                            return 0;
                        }
                        //AB#.
                        b+=2;
                        if(b == d)
                        {
                            if(i == c-1)
                                cout<<"Yes"<<endl;
                            else
//                                cout<<"No2"<<endl;
                                cout<<"No"<<endl;
                            return 0;
                        }

                    }
                    else{
                        cout<<"impossible"<<endl;
                        return 0;
                    }
                }
                else{//rock == 1 A#B?
                    if(s[b] == '#'){//A#B#
                        if(s[b+1] == '#'){//A#B##
//                            cout<<"No4"<<endl;
                            cout<<"No"<<endl;
                            return 0;
                        }
                        else{//A#B#.
                            b+=2;
                            i++;
                            if(b == d){
                                cout<<"Yes"<<endl;
                                return 0;
                            }
                        }
                    }
                    else{//A#B.
                        b+=1;
                        rock =0;
                        if(b == d){
                            cout<<"Yes"<<endl;
                            return 0;
                        }
                    }
                }
            }
            else{
                rock = 0;
            }
            if(rock == 2){
//                cout<<"No5"<<endl;
                cout<<"No"<<endl;
                return 0;
            }
        }
        s[a] = '#';
        for(int i=b;i<d;i++){
            if(s[i] == '#')
                rock++;
            else rock=0;
            if(rock == 2){
//                cout<<"No6"<<endl;
                cout<<"No"<<endl;
                return 0;
            }
        }
        cout<<"Yes"<<endl;
        return 0;

    }
    for(int i=b;i<d;i++){
        if(s[i] == '#')
            rock++;
        else rock=0;
        if(rock == 2){
//            cout<<"No7"<<endl;
            cout<<"No"<<endl;
            return 0;
        }
    }
    for(int i=a;i<c;i++){
        if(s[i] == '#')
            rock++;
        else rock=0;
        if(rock == 2){
//            cout<<"No8"<<endl;
            cout<<"No"<<endl;
            return 0;
        }
    }
    cout<<"Yes"<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'string' was not declared in this scope
    5 |     string s;
      |     ^~~~~~
a.cc:5:5: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:6:5: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |     cin>>n>>a>>b>>c>>d;
      |     ^~~
      |     std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:10: error: 's' was not declared in this scope
    7 |     cin>>s;
      |          ^
a.cc:9:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |         cout<<"No1"<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:22: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 |         cout<<"No1"<<endl;
      |                      ^~~~
      |                      std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:37:29: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   37 |                             cout<<"No"<<endl;
      |                             ^~~~
      |                             std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:37:41: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   37 |                             cout<<"No"<<endl;
      |                                         ^~~~
      |                                         std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:45:33: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   45 |                                 cout<<"Yes"<<endl;
      |                                 ^~~~
      |                                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:45:46: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   45 |                                 cout<<"Yes"<<endl;
      |                                              ^~~~
      |                                              std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:48:33: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   48 |                                 cout<<"No"<<endl;
      |                                 ^~~~
      |                                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:48:45: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   48 |                                 cout<<"No"<<endl;
      |                                             ^~~~
      |                                             std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:54:25: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   54 |                         cout<<"impossible"<<endl;
      |                         ^~~~
      |                         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:54:45: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   54 |                         cout<<"impossible"<<endl;
      |                                             ^~~~
      |                                             std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:62:29: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   62 |                             cout<<"No"<<endl;
      |                             ^~~~
      |                             std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:62:41: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   62 |                             cout<<"No"<<endl;
      |                                         ^~~~
      |                                         std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:69:33: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   69 |                                 cout<<"Yes"<<endl;
      |                                 ^~~~
      |                                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:69:46: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   69 |                                 cout<<"Yes"<<endl;
      |                                              ^~~~
      |                                              std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:78:29: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   78 |                             cout<<"Yes"<<endl;
      |                             ^~~~
      |                             std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:78:42: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   78 |                             cout<<"Yes"<<endl;
      |                                          ^~~~
      |                                          std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:89:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   89 |                 cout<<"No"<<endl;
      |                 ^~~~
      |                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:89:29: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   89 |                 cout<<"No"<<endl;
      |                             ^~~~
      |                             std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:100:17: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
  100 |                 cout<<"No"<<endl;
      |                 ^~~~
      |                 std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:100:29: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
  100 |                 cout<<"No"<<endl;
      |                             ^~~~
      |                             std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:104:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
  104 |         cout<<"Yes"<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:104:22: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
  104 |         cout<<"Yes"<<endl;
      |                      ^~~~
      |                      std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:114:13: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
  114 |             cout<<"No"<<endl;
      |             ^~~~
      |             std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:114:25: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
  114 |             cout<<"No"<