Eroare de compilare: main.cpp: In function 'int main()': main.cpp:45:27: error: no match for 'operator=' (operand types are 'std::pair<int, std::pair<int, int> >' and 'const int') 45 | raspuns2 = it.first; | ^~~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:64, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/ostream:38, from /usr/include/c++/10/iostream:39, from main.cpp:1: /usr/include/c++/10/bits/stl_pair.h:390:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type) [with _T1 = int; _T2 = std::pair<int, int>; typename std::conditional<std::__and_<std::is_copy_assignable<_T1>, std::is_copy_assignable<_T2> >::value, const std::pair<_T1, _T2>&, const std::__nonesuch&>::type = const std::pair<int, std::pair<int, int> >&]' 390 | operator=(typename conditional< | ^~~~~~~~ /usr/include/c++/10/bits/stl_pair.h:393:41: note: no known conversion for argument 1 from 'const int' to 'std::conditional<true, const std::pair<int, std::pair<int, int> >&, const std::__nonesuch&>::type' {aka 'const std::pair<int, std::pair<int, int> >&'} 390 | operator=(typename conditional< | ~~~~~~~~~~~~~~~~~~~~~ 391 | __and_<is_copy_assignable<_T1>, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 392 | is_copy_assignable<_T2>>::value, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 393 | const pair&, const __nonesuch&>::type __p) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/10/bits/stl_pair.h:401:7: note: candidate: 'std::pair<_T1, _T2>& std::pair<_T1, _T2>::operator=(typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type) [with _T1 = int; _T2 = std::pair<int, int>; typename std::conditional<std::__and_<std::is_move_assignable<_Tp>, std::is_move_assignable<_T2> >::value, std::pair<_T1, _T2>&&, std::__nonesuch&&>::type = std::pair<int, std::pair<int, int> >&&]' 401 | operator=(typename conditional< | ^~~~~~~~ /usr/include/c++/10/bits/stl_pair.h:404:31: note: no known conversion for argument 1 from 'const int' to 'std::conditional<true, std::pair<int, std::pair<int, int> >&&, std::__nonesuch&&>::type' {aka 'std::pair<int, std::pair<int, int> >&&'} 401 | operator=(typename conditional< | ~~~~~~~~~~~~~~~~~~~~~ 402 | __and_<is_move_assignable<_T1>, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 403 | is_move_assignable<_T2>>::value, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 404 | pair&&, __nonesuch&&>::type __p) | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ /usr/include/c++/10/bits/stl_pair.h:418:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, const _U1&>, std::is_assignable<_T2&, const _U2&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(const std::pair<_U1, _U2>&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = std::pair<int, int>]' 418 | operator=(const pair<_U1, _U2>& __p) | ^~~~~~~~ /usr/include/c++/10/bits/stl_pair.h:418:2: note: template argument deduction/substitution failed: main.cpp:45:27: note: mismatched types 'const std::pair<_T1, _T2>' and 'const int' 45 | raspuns2 = it.first; | ^~~~~ In file included from /usr/include/c++/10/bits/stl_algobase.h:64, from /usr/include/c++/10/bits/char_traits.h:39, from /usr/include/c++/10/ios:40, from /usr/include/c++/10/ostream:38, from /usr/include/c++/10/iostream:39, from main.cpp:1: /usr/include/c++/10/bits/stl_pair.h:430:2: note: candidate: 'template<class _U1, class _U2> typename std::enable_if<std::__and_<std::is_assignable<_T1&, _U1&&>, std::is_assignable<_T2&, _U2&&> >::value, std::pair<_T1, _T2>&>::type std::pair<_T1, _T2>::operator=(std::pair<_U1, _U2>&&) [with _U1 = _U1; _U2 = _U2; _T1 = int; _T2 = std::pair<int, int>]' 430 | operator=(pair<_U1, _U2>&& __p) | ^~~~~~~~ Non zero exit status: 1