Compilare: main.cpp: In function 'void PrimeDivisors()': main.cpp:40:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < primenrs.size() && primenrs[i] * primenrs[i] <= aux; i++) ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int Pinex(int, int)': main.cpp:55:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < primedivs[val].size(); i++) ~~^~~~~~~~~~~~~~~~~~~~~~~