Compilare: user.cpp: In constructor ‘T::T()’: user.cpp:11:19: warning: ‘T::h2’ will be initialized after [-Wreorder] long long h1, h2; ^ user.cpp:8:8: warning: ‘T* T::ln’ [-Wreorder] T *ln, *rn; ^ user.cpp:13:5: warning: when initialized here [-Wreorder] T(): ^ user.cpp: In constructor ‘T::T(int, int, T*, T*)’: user.cpp:10:18: warning: ‘T::sz’ will be initialized after [-Wreorder] int key, pr, sz; ^ user.cpp:8:8: warning: ‘T* T::ln’ [-Wreorder] T *ln, *rn; ^ user.cpp:16:5: warning: when initialized here [-Wreorder] T( int _key, int _pr, T* _ln, T* _rn ): ^ user.cpp: In function ‘int main()’: user.cpp:202:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < lst.size(); i ++ ) { ^ user.cpp:206:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < lst[i].size(); j ++ ) ^ user.cpp:217:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int i = 0; i < lst.size(); i ++ ) { ^ user.cpp:220:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( int j = 0; j < lst[i].size(); j ++ ) { ^