Compilare: main.cpp: In constructor 'LCA::LCA(const std::vector<int>&)': main.cpp:77:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < father.size(); ++i) ~~^~~~~~~~~~~~~~~ main.cpp: In instantiation of 'rmq<T>::rmq(const std::vector<T>&) [with T = int]': main.cpp:97:31: required from here main.cpp:16:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; (1 << i) < v.size(); ++i) main.cpp: In instantiation of 'void rmq<T>::Setlg2() [with T = int]': main.cpp:19:19: required from 'rmq<T>::rmq(const std::vector<T>&) [with T = int]' main.cpp:97:31: required from here main.cpp:63:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 2; i < v.size(); ++i) main.cpp: In instantiation of 'void rmq<T>::Update() [with T = int]': main.cpp:20:15: required from 'rmq<T>::rmq(const std::vector<T>&) [with T = int]' main.cpp:97:31: required from here main.cpp:46:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); ++i) main.cpp:49:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; (1 << i) < v.size(); ++i) main.cpp:50:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j + (1 << (i - 1)) < v.size(); ++j)