Compilare: user.cpp: In function ‘void update(std::vector<int>&, int, int)’: user.cpp:9:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i < t.size()) { ^ user.cpp: In function ‘int searchTree(std::vector<int>&, int)’: user.cpp:26:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(step < t.size() - 1) { ^ user.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(i + step <= t.size() - 1) {///!!! ^