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View Compilation Error

0_0_38904542_24164.cpp: In function 'void solve(int)':
0_0_38904542_24164.cpp:32:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   32 |         cin >> a >> b;
      |         ^~~
      |         std::cin
In file included from .\stdc++.h:146:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
0_0_38904542_24164.cpp:33:20: error: 'swap' was not declared in this scope
   33 |         if(a >= b) swap(a,b);
      |                    ^~~~
0_0_38904542_24164.cpp:33:20: note: suggested alternatives:
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/regex:68,
                 from .\stdc++.h:181:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/regex.h:2230:5: note:   'std::__cxx11::swap'
 2230 |     swap(match_results<_Bi_iter, _Alloc>& __lhs,
      |     ^~~~
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/stl_pair.h:61,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/stl_algobase.h:64,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/algorithm:60,
                 from .\stdc++.h:51:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/move.h:196:5: note:   'std::swap'
  196 |     swap(_Tp& __a, _Tp& __b)
      |     ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/move.h:196:5: note:   'std::swap'
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/compare:37,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/stl_pair.h:65:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/concepts:243:43: note:   'std::ranges::__cust::swap'
  243 |       inline constexpr __cust_swap::_Swap swap{};
      |                                           ^~~~
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/exception:164,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/stdexcept:38,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/system_error:43,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/ios_base.h:46,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/streambuf:43,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/streambuf_iterator.h:35,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iterator:66,
                 from .\stdc++.h:54:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/exception_ptr.h:230:5: note:   'std::__exception_ptr::swap'
  230 |     swap(exception_ptr& __lhs, exception_ptr& __rhs)
      |     ^~~~
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/filesystem:47,
                 from .\stdc++.h:200:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/fs_path.h:732:15: note:   'std::filesystem::__cxx11::swap'
  732 |   inline void swap(path& __lhs, path& __rhs) noexcept { __lhs.swap(__rhs); }
      |               ^~~~
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/concepts:183:35: note:   'std::ranges::__cust_swap::swap'
  183 |       template<typename _Tp> void swap(_Tp&, _Tp&) = delete;
      |                                   ^~~~
0_0_38904542_24164.cpp:35:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   35 |         cout<<"Case "<<ggg<<": ";
      |         ^~~~
      |         std::cout
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
0_0_38904542_24164.cpp:39:27: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   39 |                 cout<<-1<<endl;
      |                           ^~~~
      |                           std::endl
In file included from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/bits/unique_ptr.h:42,
                 from gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/memory:78,
                 from .\stdc++.h:56:
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/ostream:735:5: note: 'std::endl' declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
0_0_38904542_24164.cpp:48:45: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   48 |                         cout<<p[i - 1] - a<<endl;
      |                                             ^~~~
      |                                             std::endl
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/ostream:735:5: note: 'std::endl' declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
0_0_38904542_24164.cpp:52:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   52 |          if(!f)cout<<-1<<endl;
      |                          ^~~~
      |                          std::endl
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/ostream:735:5: note: 'std::endl' declared here
  735 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
0_0_38904542_24164.cpp: In function 'int main()':
0_0_38904542_24164.cpp:57:9: error: 'ios' has not been declared
   57 |         ios :: sync_with_stdio(false);
      |         ^~~
0_0_38904542_24164.cpp:58:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   58 |         cin.tie(nullptr);
      |         ^~~
      |         std::cin
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
0_0_38904542_24164.cpp:59:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   59 |         cout.tie(nullptr);
      |         ^~~~
      |         std::cout
gcc-13.1.0/lib/gcc/x86_64-w64-mingw32/13.1.0/include/c++/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~


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