Eroare de compilare: user.cpp: In function ‘void bfs(int)’: user.cpp:21:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<graph[element].size();i++) { ^ user.cpp:24:38: error: no match for call to ‘(std::vector<bool>) (__gnu_cxx::__alloc_traits<std::allocator<int> >::value_type&)’ visited(graph[element][i])=true; ^ user.cpp: In function ‘int main()’: user.cpp:43:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<visited.size() && i<n;i++) ^ user.cpp:32:14: warning: unused variable ‘nr’ [-Wunused-variable] int x,y,nr=0; ^