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Compile Error:

  D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x47): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x53): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::begin()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x62): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::end()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x71): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::begin()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0xb5): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0xce): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::getline<char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0xea): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::basic_istringstream(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x108): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x145): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x15b): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x170): undefined reference to `std::basic_ios<char, std::char_traits<char> >::operator bool() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x183): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x1a1): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::basic_istringstream(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::_Ios_Openmode)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x28d): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::length() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x2b0): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x2c3): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::operator>><char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x2d8): undefined reference to `std::basic_ios<char, std::char_traits<char> >::operator bool() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x30c): undefined reference to `std::ostream::operator<<(int)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x31e): undefined reference to `std::ostream::operator<<(std::ostream& (*)(std::ostream&))'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x32a): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_istringstream()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x343): undefined reference to `std::basic_istream<char, std::char_traits<char> >& std::getline<char, std::char_traits<char>, std::allocator<char> >(std::basic_istream<char, std::char_traits<char> >&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x358): undefined reference to `std::basic_ios<char, std::char_traits<char> >::operator bool() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x36b): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::empty() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x39a): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x3a9): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x3c7): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_istringstream()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x3d6): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x3ef): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x400): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_istringstream()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x414): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x428): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x446): undefined reference to `std::__cxx11::basic_istringstream<char, std::char_traits<char>, std::allocator<char> >::~basic_istringstream()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text+0x45a): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.xdata+0x2c): undefined reference to `__gxx_personality_seh0'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.xdata$_ZNSt12_Vector_baseINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED2Ev+0xc): undefined reference to `__gxx_personality_seh0'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.xdata$_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EED1Ev+0xc): undefined reference to `__gxx_personality_seh0'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_[_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_]+0x1c): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_[_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_]+0x2b): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_[_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_]+0x3c): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::size() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_[_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_]+0x4b): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::data() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_[_ZSteqIcSt11char_traitsIcESaIcEEbRKNSt7__cxx1112basic_stringIT_T0_T1_EESA_]+0x5a): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::data() const'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12emplace_backIJS5_EEERS5_DpOT_[_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12emplace_backIJS5_EEERS5_DpOT_]+0x97): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE17_M_realloc_insertIJS5_EEEvN9__gnu_cxx17__normal_iteratorIPS5_S7_EEDpOT_[_ZNSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE17_M_realloc_insertIJS5_EEEvN9__gnu_cxx17__normal_iteratorIPS5_S7_EEDpOT_]+0x105): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE10deallocateEPS5_y[_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE10deallocateEPS5_y]+0x27): undefined reference to `operator delete(void*, unsigned long long)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12_M_check_lenEyPKc[_ZNKSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS5_EE12_M_check_lenEyPKc]+0x4e): undefined reference to `std::__throw_length_error(char const*)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSt8_DestroyINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvPT_[_ZSt8_DestroyINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEEvPT_]+0x14): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv[_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv]+0x4a): undefined reference to `std::__throw_bad_array_new_length()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv[_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv]+0x4f): undefined reference to `std::__throw_bad_alloc()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv[_ZNSt15__new_allocatorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEE8allocateEyPKv]+0x5f): undefined reference to `operator new(unsigned long long)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSt19__relocate_object_aINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_SaIS5_EEvPT_PT0_RT1_[_ZSt19__relocate_object_aINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_SaIS5_EEvPT_PT0_RT1_]+0x7e): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.text$_ZSt19__relocate_object_aINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_SaIS5_EEvPT_PT0_RT1_[_ZSt19__relocate_object_aINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES5_SaIS5_EEvPT_PT0_RT1_]+0xb4): undefined reference to `std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >::~basic_string()'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.rdata$.refptr._ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_[.refptr._ZSt4endlIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_]+0x0): undefined reference to `std::basic_ostream<char, std::char_traits<char> >& std::endl<char, std::char_traits<char> >(std::basic_ostream<char, std::char_traits<char> >&)'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.rdata$.refptr._ZSt4cout[.refptr._ZSt4cout]+0x0): undefined reference to `std::cout'
D:/msys64/ucrt64/bin/../lib/gcc/x86_64-w64-mingw32/13.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: D:\appdata\2\ccKJsNSa.o::(.rdata$.refptr._ZSt3cin[.refptr._ZSt3cin]+0x0): undefined reference to `std::cin'
collect2.exe: error: ld returned 1 exit status
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