Eroare de compilare: main.cpp: In function 'void DFS(int)': main.cpp:22:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v[k].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<a.size() && ok;j++) ~^~~~~~~~~ main.cpp:49:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.size();i++) cout<<"["<<a[i].x<<","<<a[i].y<<"] "; ~^~~~~~~~~ main.cpp:51:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<b.size();j++) cout<<"["<<b[j].x<<","<<b[j].y<<"] "; ~^~~~~~~~~ main.cpp:52:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.size();i++) ~^~~~~~~~~ main.cpp:53:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<b.size();j++) ~^~~~~~~~~ main.cpp:59:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) cout<<v[i][j]<<" "; ~^~~~~~~~~~~~ main.cpp:70:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<a.size();i++) fout<<a[i].x<<" "<<a[i].y<<" 1\n"; ~^~~~~~~~~ main.cpp:71:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<b.size();i++) ~^~~~~~~~~ main.cpp:73:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<a.size() && ok;j++) ~^~~~~~~~~ main.cpp:74:18: error: no match for 'operator==' (operand types are '__gnu_cxx::__alloc_traits<std::allocator<muchie> >::value_type {aka muchie}' and '__gnu_cxx::__alloc_traits<std::allocator<muchie> >::value_type {aka muchie}') if(b[i]==a[j]) ok=0; In file included from /usr/include/c++/6/regex:62:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:110, from main.cpp:1: /usr/include/c++/6/bits/regex.h:940:5: note: candidate: template<class _BiIter> bool std::__cxx11::operator==(const std::__cxx11::sub_match<_BiIter>&, const std::__cxx11::sub_match<_BiIter>&) operator==(const sub_match<_BiIter>& __lhs, const sub_match<_BiIter>& __rhs) ^~~~~~~~ /usr/include/c++/6/bits/regex.h:940:5: note: template argument deduction/substitution failed: main.cpp:74:23: note: '__gnu_cxx::__alloc_traits<std::allocator<muchie> >::value_type {aka muchie}' is not derived from 'const std::__cxx11::sub_match<_BiIter>' if(b[i]==a[j]) ok=0; ^ In file included from /usr/include/c++/6/regex:62:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:110, from main.cpp:1: /usr/include/c++/6/bits/regex.h:1013:5: note: candidate: template<class _Bi_iter, class _Ch_traits, class _Ch_alloc> bool std::__cxx11::operator==(std::__cxx11::__sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>&, const std::__cxx11::sub_match<_BiIter>&) operator==(const __sub_match_string<_Bi_iter, _Ch_traits, _Ch_alloc>& __lhs, Non zero exit status: 1