Compilare: main.cpp:22:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type] main() ^ main.cpp: In function 'int main()': main.cpp:38:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < diV.size() - 1; i++) ~~^~~~~~~~~~~~~~~~ main.cpp:39:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = i + 1; j < diV.size(); j++) ~~^~~~~~~~~~~~