Compilare: main.cpp: In function 'int nr(long long int)': main.cpp:55:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0;i<factorizare.size() && ok;i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:75:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < factorizare.size();i++) ~~^~~~~~~~~~~~~~~~~~~~