Eroare de compilare: main.cpp: In function 'void dfs2(int, int)': main.cpp:96:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < adj[cur].size(); i ++) ~~^~~~~~~~~~~~~~~~~ main.cpp:102:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < adj[cur].size(); i ++) ~~^~~~~~~~~~~~~~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:64:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: /usr/include/c++/6/bits/stl_pair.h: In instantiation of 'constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) [with _T1 = std::bitset<19ul>; _T2 = std::bitset<19ul>]': /usr/include/c++/6/bits/stl_algobase.h:200:15: required from 'constexpr const _Tp& std::min(const _Tp&, const _Tp&) [with _Tp = std::pair<std::bitset<19ul>, std::bitset<19ul> >]' main.cpp:128:74: required from here /usr/include/c++/6/bits/stl_pair.h:442:24: error: no match for 'operator<' (operand types are 'const std::bitset<19ul>' and 'const std::bitset<19ul>') { return __x.first < __y.first ~~~~~~~~~~^~~~~~~~~~~ /usr/include/c++/6/bits/stl_pair.h:441:5: note: candidate: template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^~~~~~~~ /usr/include/c++/6/bits/stl_pair.h:441:5: note: template argument deduction/substitution failed: /usr/include/c++/6/bits/stl_pair.h:442:24: note: 'const std::bitset<19ul>' is not derived from 'const std::pair<_T1, _T2>' { return __x.first < __y.first ~~~~~~~~~~^~~~~~~~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: /usr/include/c++/6/bits/stl_iterator.h:298:5: note: candidate: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator<(const reverse_iterator<_Iterator>& __x, ^~~~~~~~ /usr/include/c++/6/bits/stl_iterator.h:298:5: note: template argument deduction/substitution failed: In file included from /usr/include/c++/6/bits/stl_algobase.h:64:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, from main.cpp:1: /usr/include/c++/6/bits/stl_pair.h:442:24: note: 'const std::bitset<19ul>' is not derived from 'const std::reverse_iterator<_Iterator>' { return __x.first < __y.first ~~~~~~~~~~^~~~~~~~~~~ In file included from /usr/include/c++/6/bits/stl_algobase.h:67:0, from /usr/include/c++/6/bits/char_traits.h:39, from /usr/include/c++/6/ios:40, from /usr/include/c++/6/ostream:38, from /usr/include/c++/6/iostream:39, Non zero exit status: 1