Compilare: main.cpp: In constructor 'Graf::Graf(int, int, int, int)': main.cpp:37:6: warning: 'Graf::n' will be initialized after [-Wreorder] int n; ^ main.cpp:36:6: warning: 'int Graf::x' [-Wreorder] int x, y, z; ^ main.cpp:39:2: warning: when initialized here [-Wreorder] Graf(int n, int x, int y, int z) : n(n), x(x), y(y), z(z), adj(n), euler(2 * n - 1), siz(n), in(n), out(n) ^~~~ main.cpp:36:12: warning: 'Graf::z' will be initialized after [-Wreorder] int x, y, z; ^ main.cpp:21:25: warning: 'std::vector<std::vector<int> > Graf::adj' [-Wreorder] vector <vector <int> > adj; ^~~ main.cpp:39:2: warning: when initialized here [-Wreorder] Graf(int n, int x, int y, int z) : n(n), x(x), y(y), z(z), adj(n), euler(2 * n - 1), siz(n), in(n), out(n) ^~~~ main.cpp: In member function 'P Graf::dfs2(int, int)': main.cpp:107:25: warning: statement has no effect [-Wunused-value] res.val |- aux.val; ~~~~~~~~^~~~~~~~~~ main.cpp: At global scope: main.cpp:197:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^ main.cpp: In member function 'bool Graf::get(int, int, int, int)': main.cpp:91:2: warning: control reaches end of non-void function [-Wreturn-type] } ^