Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:113:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int idx = 1; idx < distances.size(); ++idx) { ~~~~^~~~~~~~~~~~~~~~~~ In file included from /usr/include/x86_64-linux-gnu/c++/6/32/bits/c++allocator.h:33:0, from /usr/include/c++/6/bits/allocator.h:46, from /usr/include/c++/6/string:41, from /usr/include/c++/6/bits/locale_classes.h:40, from /usr/include/c++/6/bits/ios_base.h:41, from /usr/include/c++/6/ios:42, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from user.cpp:2: /usr/include/c++/6/ext/new_allocator.h: In instantiation of ‘void __gnu_cxx::new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = int; _Args = {const int&, int&}; _Tp = int]’: /usr/include/c++/6/bits/alloc_traits.h:475:4: required from ‘static void std::allocator_traits<std::allocator<_CharT> >::construct(std::allocator_traits<std::allocator<_CharT> >::allocator_type&, _Up*, _Args&& ...) [with _Up = int; _Args = {const int&, int&}; _Tp = int; std::allocator_traits<std::allocator<_CharT> >::allocator_type = std::allocator<int>]’ /usr/include/c++/6/bits/vector.tcc:96:30: required from ‘void std::vector<_Tp, _Alloc>::emplace_back(_Args&& ...) [with _Args = {const int&, int&}; _Tp = int; _Alloc = std::allocator<int>]’ /usr/include/c++/6/bits/stl_queue.h:576:4: required from ‘void std::priority_queue<_Tp, _Sequence, _Compare>::emplace(_Args&& ...) [with _Args = {const int&, int&}; _Tp = int; _Sequence = std::vector<int>; _Compare = std::function<bool(int, int)>]’ user.cpp:83:72: required from here /usr/include/c++/6/ext/new_allocator.h:120:4: error: new initializer expression list treated as compound expression [-fpermissive] { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); } ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~