Compilare: main.cpp: In function 'int main()': main.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Div.size (); i ++){ ~~^~~~~~~~~~~~~ main.cpp:33:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i; j < Div.size (); j ++){ ~~^~~~~~~~~~~~~ main.cpp:43:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Div.size (); i ++){ ~~^~~~~~~~~~~~~ main.cpp:44:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i; j < Div.size (); j ++){ ~~^~~~~~~~~~~~~