Compilare: user.cpp: In function ‘int main()’: user.cpp:38:44: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < A.size(); i++) ^ user.cpp:55:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < A.size(); i++) ^ user.cpp:13:12: warning: unused variable ‘poz’ [-Wunused-variable] int t, poz; ^