Compilare: user.cpp: In instantiation of ‘LCA<T>::LCA(int, int, decltype (((LCA<T>*)(void)0)->LCA<T>::G)&, bool, std::function<T(T, T)>, T) [with T = bool; decltype (((LCA<T>*)(void)0)->LCA<T>::G) = std::vector<std::vector<std::pair<int, bool> > >]’: user.cpp:94:67: required from here user.cpp:14:12: warning: ‘LCA<bool>::root’ will be initialized after [-Wreorder] int n, root; ^~~~ user.cpp:8:36: warning: ‘std::vector<std::vector<std::pair<int, bool> > > LCA<bool>::G’ [-Wreorder] vector<vector<pair<int, T> > > G; ^ user.cpp:17:5: warning: when initialized here [-Wreorder] LCA(int n, int root, decltype(G)& Graph, bool idx, function<T(T,T)> f, T acc) : ^~~ user.cpp:13:10: warning: ‘LCA<bool>::indexed’ will be initialized after [-Wreorder] bool indexed; ^~~~~~~ user.cpp:9:22: warning: ‘std::function<bool(bool, bool)> LCA<bool>::func’ [-Wreorder] function<T(T,T)> func; ^~~~ user.cpp:17:5: warning: when initialized here [-Wreorder] LCA(int n, int root, decltype(G)& Graph, bool idx, function<T(T,T)> f, T acc) : ^~~ user.cpp:15:7: warning: ‘LCA<bool>::acc’ will be initialized after [-Wreorder] T acc; ^~~ user.cpp:10:25: warning: ‘std::vector<int> LCA<bool>::use’ [-Wreorder] vector<int> L, Log, use; ^~~ user.cpp:17:5: warning: when initialized here [-Wreorder] LCA(int n, int root, decltype(G)& Graph, bool idx, function<T(T,T)> f, T acc) : ^~~ user.cpp:10:25: warning: ‘LCA<bool>::use’ will be initialized after [-Wreorder] vector<int> L, Log, use; ^~~ user.cpp:10:17: warning: ‘std::vector<int> LCA<bool>::L’ [-Wreorder] vector<int> L, Log, use; ^ user.cpp:17:5: warning: when initialized here [-Wreorder] LCA(int n, int root, decltype(G)& Graph, bool idx, function<T(T,T)> f, T acc) : ^~~ user.cpp: In function ‘int main()’: user.cpp:83:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.in", "r", stdin); ^ user.cpp:84:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("lca.out", "w", stdout); ^ user.cpp:86:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:91:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t);