Compilare: user.cpp: In function ‘int main()’: user.cpp:106:56: warning: unused variable ‘Lowest_Ancestor’ [-Wunused-variable] int X = (*it).second.first, Y = (*it).second.second, Lowest_Ancestor = LCA (X, Y), Q = (*it).first.second; ^ user.cpp:106:86: warning: unused variable ‘Q’ [-Wunused-variable] int X = (*it).second.first, Y = (*it).second.second, Lowest_Ancestor = LCA (X, Y), Q = (*it).first.second; ^