View Compilation Error

0_0_38297146_24474.cpp:490:2: error: expected class-name before '{' token
  {
  ^
0_0_38297146_24474.cpp:639:2: error: expected class-name before '{' token
  {
  ^
0_0_38297146_24474.cpp: In static member function 'static bool {anonymous}::UndirectedGraph::hasCircle(std::map<int, std::vector<int> >)':
0_0_38297146_24474.cpp:664:26: error: 'getFirst' was not declared in this scope
    auto keys = getFirst(m);
                          ^