Compilare: main.cpp: In function 'int main()': main.cpp:53:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v.size() <= k) ~~~~~~~~~^~~~ main.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int poz = k; poz < v.size(); poz++) ~~~~^~~~~~~~~~ main.cpp:43:16: warning: unused variable 'cate' [-Wunused-variable] int k, cate = 0; ^~~~