Compilare: user.cpp: In function ‘int main()’: user.cpp:31:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v.size(); j++) ^ user.cpp:39:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < v.size(); j++) ^ user.cpp:44:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v.size()>maxim) ^ user.cpp:25:6: warning: variable ‘pivot’ set but not used [-Wunused-but-set-variable] int pivot; ^