Eroare de compilare: main.cpp: In function 'int main()': main.cpp:22:19: warning: comparison with string literal results in unspecified behavior [-Waddress] if (op == "I") { ^~~ main.cpp:30:24: warning: comparison with string literal results in unspecified behavior [-Waddress] else if (op == "S") ^~~ main.cpp:45:24: warning: comparison with string literal results in unspecified behavior [-Waddress] else if (op == "C") ^~~ main.cpp:50:24: warning: comparison with string literal results in unspecified behavior [-Waddress] else if (op == "MAX"){ ^~~~~ main.cpp:56:29: error: no match for 'operator-' (operand types are 'std::pair<const int, int>' and 'std::pair<const int, int>') fout << *it - *Map.begin() << '\n'; // diferenta valorilor de pe prima si ultima pozitie (cel ~~~~^~~~~~~~~~~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:2: /usr/include/c++/6/bits/stl_iterator.h:333:5: note: candidate: template<class _Iterator> decltype ((__x.base() - __y.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator-(const reverse_iterator<_Iterator>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:333:5: note: template argument deduction/substitution failed: main.cpp:56:42: note: 'std::pair<const int, int>' is not derived from 'const std::reverse_iterator<_Iterator>' fout << *it - *Map.begin() << '\n'; // diferenta valorilor de pe prima si ultima pozitie (cel ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:2: /usr/include/c++/6/bits/stl_iterator.h:387:5: note: candidate: template<class _IteratorL, class _IteratorR> decltype ((__y.base() - __x.base())) std::operator-(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_IteratorR>&) operator-(const reverse_iterator<_IteratorL>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:387:5: note: template argument deduction/substitution failed: main.cpp:56:42: note: 'std::pair<const int, int>' is not derived from 'const std::reverse_iterator<_Iterator>' fout << *it - *Map.begin() << '\n'; // diferenta valorilor de pe prima si ultima pozitie (cel ^ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:2: /usr/include/c++/6/bits/stl_iterator.h:1186:5: note: candidate: template<class _IteratorL, class _IteratorR> decltype ((__x.base() - __y.base())) std::operator-(const std::move_iterator<_IteratorL>&, const std::move_iterator<_IteratorR>&) operator-(const move_iterator<_IteratorL>& __x, Non zero exit status: 1