Compilare: main.cpp: In function 'void desc(int)': main.cpp:19:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (v[d].size() >= k) ~~~~~~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:37:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = v[maxim].size() - 1; i >= v[maxim].size() - k; --i) ~~^~~~~~~~~~~~~~~~~~~~~~