Eroare de compilare: user.cpp: In function ‘void PrintWords(int)’: user.cpp:42:16: error: reference to ‘prev’ is ambiguous PrintWords(prev[loc]); ^ user.cpp:32:28: note: candidates are: int prev [20005] int best[30],ans,dp[kMaxN],prev[kMaxN],last[kMaxN],bestpos; ^ 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/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:5: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp: In function ‘void Solve()’: user.cpp:56:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<=words.size()-1; ++i) ^ user.cpp:61:9: error: reference to ‘prev’ is ambiguous prev[i+1] = last[fs]; ^ user.cpp:32:28: note: candidates are: int prev [20005] int best[30],ans,dp[kMaxN],prev[kMaxN],last[kMaxN],bestpos; ^ 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/istream:38, from /usr/include/c++/4.8/fstream:38, from user.cpp:5: /usr/include/c++/4.8/bits/stl_iterator_base_funcs.h:193:5: note: template<class _BidirectionalIterator> _BidirectionalIterator std::prev(_BidirectionalIterator, typename std::iterator_traits<_Iter>::difference_type) prev(_BidirectionalIterator __x, typename ^ user.cpp:69:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(size_t i=0; i<=toint('z'); ++i) ^