Eroare de compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:25:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[node].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:81:32: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] for (int step = 1; (1<<step-1) <= N; step++) ^ user.cpp:87:42: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] L[i].nr[1] = (lvl[i]-(1<<step-1)) > 1 ? P[step-1][T[step-1][i]] : -1; ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:2: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = suffixArray*; _Tp = suffixArray; _Compare = bool (*)(suffixArray&, suffixArray&)]’: /usr/include/c++/4.8/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = suffixArray*; _Compare = bool (*)(suffixArray&, suffixArray&)]’ /usr/include/c++/4.8/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = suffixArray*; _Size = int; _Compare = bool (*)(suffixArray&, suffixArray&)]’ /usr/include/c++/4.8/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = suffixArray*; _Compare = bool (*)(suffixArray&, suffixArray&)]’ user.cpp:91:28: required from here /usr/include/c++/4.8/bits/stl_algo.h:2287:35: error: invalid initialization of reference of type ‘suffixArray&’ from expression of type ‘const suffixArray’ while (__comp(*__first, __pivot)) ^ /usr/include/c++/4.8/bits/stl_algo.h:2290:34: error: invalid initialization of reference of type ‘suffixArray&’ from expression of type ‘const suffixArray’ while (__comp(__pivot, *__last)) ^