Language: C++

#include<iostream>
#include<string>
int main(){
  std:string A;
  std::string B;
  int q=0;
  int w=0;
  std::string C;
  std::cin>>A>>B>>q>w>>C;
  if(A==C){
     std::cout<<q-1<<w<<std::endl;
  }
  else{
  std::cout<<q<<w-1<<std::endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:7: error: 'string' was not declared in this scope
    4 |   std:string A;
      |       ^~~~~~
a.cc:4:7: note: suggested alternatives:
In file included from /usr/include/c++/14/iosfwd:41,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
In file included from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44:
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:9:13: error: 'A' was not declared in this scope
    9 |   std::cin>>A>>B>>q>w>>C;
      |             ^
a.cc:9:22: error: no match for 'operator>>' (operand types are 'int' and 'std::string' {aka 'std::__cxx11::basic_string<char>'})
    9 |   std::cin>>A>>B>>q>w>>C;
      |                     ~^~~
      |                     |  |
      |                     |  std::string {aka std::__cxx11::basic_string<char>}
      |                     int
In file included from /usr/include/c++/14/string:55:
/usr/include/c++/14/bits/basic_string.tcc:835:5: note: candidate: 'template<class _CharT, class _Traits, class _Alloc> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, __cxx11::basic_string<_CharT, _Traits, _Allocator>&)'
  835 |     operator>>(basic_istream<_CharT, _Traits>& __in,
      |     ^~~~~~~~
/usr/include/c++/14/bits/basic_string.tcc:835:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
In file included from /usr/include/c++/14/bits/memory_resource.h:38,
                 from /usr/include/c++/14/string:68:
/usr/include/c++/14/cstddef:131:5: note: candidate: 'template<class _IntegerType> constexpr std::__byte_op_t<_IntegerType> std::operator>>(byte, _IntegerType)'
  131 |     operator>>(byte __b, _IntegerType __shift) noexcept
      |     ^~~~~~~~
/usr/include/c++/14/cstddef:131:5: note:   template argument deduction/substitution failed:
a.cc:9:21: note:   cannot convert 'w' (type 'int') to type 'std::byte'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                     ^
In file included from /usr/include/c++/14/istream:1109,
                 from /usr/include/c++/14/iostream:42:
/usr/include/c++/14/bits/istream.tcc:978:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT&)'
  978 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c)
      |     ^~~~~~~~
/usr/include/c++/14/bits/istream.tcc:978:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:849:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char&)'
  849 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:849:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:854:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char&)'
  854 |     operator>>(basic_istream<char, _Traits>& __in, signed char& __c)
      |     ^~~~~~~~
/usr/include/c++/14/istream:854:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:896:5: note: candidate: 'template<class _CharT, class _Traits> std::basic_istream<_CharT, _Traits>& std::operator>>(basic_istream<_CharT, _Traits>&, _CharT*)'
  896 |     operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:896:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<_CharT, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:939:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, unsigned char*)'
  939 |     operator>>(basic_istream<char, _Traits>& __in, unsigned char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:939:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:945:5: note: candidate: 'template<class _Traits> std::basic_istream<char, _Traits>& std::operator>>(basic_istream<char, _Traits>&, signed char*)'
  945 |     operator>>(basic_istream<char, _Traits>& __in, signed char* __s)
      |     ^~~~~~~~
/usr/include/c++/14/istream:945:5: note:   template argument deduction/substitution failed:
a.cc:9:24: note:   mismatched types 'std::basic_istream<char, _Traits>' and 'int'
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:1099:5: note: candidate: 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&)'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~
/usr/include/c++/14/istream:1099:5: note:   template argument deduction/substitution failed:
/usr/include/c++/14/istream: In substitution of 'template<class _Istream, class _Tp> _Istream&& std::operator>>(_Istream&&, _Tp&&) [with _Istream = int&; _Tp = std::__cxx11::basic_string<char>&]':
a.cc:9:24:   required from here
    9 |   std::cin>>A>>B>>q>w>>C;
      |                        ^
/usr/include/c++/14/istream:1099:5: error: no type named 'type' in 'struct std::enable_if<false, void>'
 1099 |     operator>>(_Istream&& __is, _Tp&& __x)
      |     ^~~~~~~~