Eroare de compilare: user.cpp: In function ‘void dfs(int, int)’: user.cpp:80:5: error: reference to ‘begin’ is ambiguous begin[nod]=L; ^ user.cpp:25:26: note: candidates are: int begin [16010] int n,m,i,k,niv[16010],L,begin[16010],end[16010],sol[16010],f[16010],t[16010],w[16010]; ^ In file included from /usr/include/c++/4.8/bits/basic_string.h:42:0, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/initializer_list:89:5: note: template<class _Tp> constexpr const _Tp* std::begin(std::initializer_list<_Tp>) begin(initializer_list<_Tp> __ils) noexcept ^ In file included from /usr/include/c++/4.8/string:51:0, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:1: /usr/include/c++/4.8/bits/range_access.h:87:5: note: template<class _Tp, unsigned int _Nm> _Tp* std::begin(_Tp (&)[_Nm]) begin(_Tp (&__arr)[_Nm]) ^ /usr/include/c++/4.8/bits/range_access.h:58:5: note: template<class _Container> decltype (__cont.begin()) std::begin(const _Container&) begin(const _Container& __cont) -> decltype(__cont.begin()) ^ /usr/include/c++/4.8/bits/range_access.h:48:5: note: template<class _Container> decltype (__cont.begin()) std::begin(_Container&) begin(_Container& __cont) -> decltype(__cont.begin()) ^ user.cpp:81:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<l[nod].size();i++) ^ user.cpp:83:5: error: reference to ‘end’ is ambiguous end[nod]=L; ^ user.cpp:25:39: note: candidates are: int end [16010] int n,m,i,k,niv[16010],L,begin[16010],end[16010],sol[16010],f[16010],t[16010],w[16010]; ^ In file included from /usr/include/c++/4.8/bits/basic_string.h:42:0, from /usr/include/c++/4.8/string:52, from /usr/include/c++/4.8/bits/locale_classes.h:40, from /usr/include/c++/4.8/bits/ios_base.h:41, from /usr/include/c++/4.8/ios:42, from /usr/include/c++/4.8/istream:38, from /usr/include/c++/4.8/fstream:38,