Compilare: main.cpp: In instantiation of 'SegTree<T>::SegTree(Iterator, Iterator, T, std::function<T(T, T)>) [with Iterator = __gnu_cxx::__normal_iterator<int*, std::vector<int> >; T = int]': main.cpp:46:83: required from here main.cpp:7:31: warning: 'SegTree<int>::id' will be initialized after [-Wreorder] vector <T> t; int n, h; T id; ^~ main.cpp:7:23: warning: 'int SegTree<int>::n' [-Wreorder] vector <T> t; int n, h; T id; ^ main.cpp:29:34: warning: when initialized here [-Wreorder] template <typename Iterator> SegTree(Iterator op, Iterator ed, T _id, function <T(T, T)> _f) : id(_id), n(ed - op), h(31 - __builtin_clz(n)), f(_f) { ^~~~~~~