Eroare de compilare: user.cpp: In function ‘void dfs1(int)’: user.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<a[nod].size();i++) ^ user.cpp: In function ‘void dfs2(int)’: user.cpp:36:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<b[nod].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:60:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<c[g[i].poz].size();j++) ^ In file included from /usr/include/c++/5/bits/stl_algobase.h:71:0, from /usr/include/c++/5/bits/char_traits.h:39, from /usr/include/c++/5/ios:40, from /usr/include/c++/5/istream:38, from /usr/include/c++/5/fstream:38, from user.cpp:1: /usr/include/c++/5/bits/predefined_ops.h: In instantiation of ‘bool __gnu_cxx::__ops::_Iter_comp_iter<_Compare>::operator()(_Iterator1, _Iterator2) [with _Iterator1 = std::vector<int>*; _Iterator2 = std::vector<int>*; _Compare = int (*)(elem, elem)]’: /usr/include/c++/5/bits/stl_algo.h:1842:14: required from ‘void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1880:25: required from ‘void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1966:31: required from ‘void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:4729:18: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = std::vector<int>*; _Compare = int (*)(elem, elem)]’ user.cpp:51:23: required from here /usr/include/c++/5/bits/predefined_ops.h:123:46: error: could not convert ‘* __it1’ from ‘std::vector<int>’ to ‘elem’ { return bool(_M_comp(*__it1, *__it2)); } ^ /usr/include/c++/5/bits/predefined_ops.h: In instantiation of ‘bool __gnu_cxx::__ops::_Val_comp_iter<_Compare>::operator()(_Value&, _Iterator) [with _Value = std::vector<int>; _Iterator = std::vector<int>*; _Compare = int (*)(elem, elem)]’: /usr/include/c++/5/bits/stl_algo.h:1823:20: required from ‘void std::__unguarded_linear_insert(_RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Val_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1850:36: required from ‘void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1880:25: required from ‘void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1966:31: required from ‘void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:4729:18: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = std::vector<int>*; _Compare = int (*)(elem, elem)]’ user.cpp:51:23: required from here /usr/include/c++/5/bits/predefined_ops.h:169:37: error: could not convert ‘__val’ from ‘std::vector<int>’ to ‘elem’ { return bool(_M_comp(__val, *__it)); } ^ /usr/include/c++/5/bits/predefined_ops.h: In instantiation of ‘bool __gnu_cxx::__ops::_Iter_comp_val<_Compare>::operator()(_Iterator, _Value&) [with _Iterator = std::vector<int>*; _Value = std::vector<int>; _Compare = int (*)(elem, elem)]’: /usr/include/c++/5/bits/stl_heap.h:129:48: required from ‘void std::__push_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Distance = int; _Tp = std::vector<int>; _Compare = __gnu_cxx::__ops::_Iter_comp_val<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_heap.h:228:23: required from ‘void std::__adjust_heap(_RandomAccessIterator, _Distance, _Distance, _Tp, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Distance = int; _Tp = std::vector<int>; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_heap.h:333:22: required from ‘void std::__make_heap(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1669:23: required from ‘void std::__heap_select(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1928:25: required from ‘void std::__partial_sort(_RandomAccessIterator, _RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1943:27: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Size = int; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:1963:25: required from ‘void std::__sort(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = std::vector<int>*; _Compare = __gnu_cxx::__ops::_Iter_comp_iter<int (*)(elem, elem)>]’ /usr/include/c++/5/bits/stl_algo.h:4729:18: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = std::vector<int>*; _Compare = int (*)(elem, elem)]’ user.cpp:51:23: required from here /usr/include/c++/5/bits/predefined_ops.h:144:37: error: could not convert ‘* __it’ from ‘std::vector<int>’ to ‘elem’ { return bool(_M_comp(*__it, __val)); } ^