Compilare: user.cpp: In function ‘void Print()’: user.cpp:46:33: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if (Cycle.front() == Odd[0] && Cycle.back() == Odd[1] || Cycle.front() == Odd[1] && Cycle.back() == Odd[0]) ^ user.cpp:69:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int index(0) ; index < Cycle.size() - 1 ; ++index) ^ user.cpp: In function ‘void DepthFirstSearch(int)’: user.cpp:146:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (index = 0 ; index < Multigraph[node].size() && Used[Multigraph[node][index].first] ; ++index) ^ user.cpp:148:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (index == Multigraph[node].size()) ^