Compilare: main.cpp: In function 'void p_preg()': main.cpp:13:9: warning: unused variable 'k' [-Wunused-variable] 13 | int k=0; | ^ main.cpp: In function 'int main()': main.cpp:46:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(int i=0; i<rez.size(); i++) fout << rez[i] << " "; | ~^~~~~~~~~~~