Eroare de compilare: user.cpp: In function ‘void solve()’: user.cpp:21:23: error: reference to ‘next’ is ambiguous for(i=2;i<=nr;i++)next[y[i]]=poz[y[i-1]]; ^ user.cpp:7:25: note: candidates are: int next [100005] int x[100005],y[100005],next[100005],poz[100005]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:23:25: error: reference to ‘next’ is ambiguous for(i=1;i<nr;i++)if(next[x[i]]>i&&x[i]!=1)n++; ^ user.cpp:7:25: note: candidates are: int next [100005] int x[100005],y[100005],next[100005],poz[100005]; ^ In file included from /usr/include/c++/4.8/bits/stl_algobase.h:66:0, from /usr/include/c++/4.8/bits/char_traits.h:39, from /usr/include/c++/4.8/ios:40, from /usr/include/c++/4.8/ostream:38, from /usr/include/c++/4.8/iostream:39, from user.cpp:1: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:184:5: note: template<class _ForwardIterator> _ForwardIterator std::next(_ForwardIterator, typename std::iterator_traits<_Iter>::difference_type) next(_ForwardIterator __x, typename ^ user.cpp:19:14: warning: unused variable ‘m’ [-Wunused-variable] n=0; int m=1; ^