Compilare: main.cpp: In function 'int main()': main.cpp:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Div.size (); i ++){ ~~^~~~~~~~~~~~~ main.cpp:25:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i; j < Div.size (); j ++){ ~~^~~~~~~~~~~~~ main.cpp:40:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Div.size (); i ++){ ~~^~~~~~~~~~~~~ main.cpp:41:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = i; j < Div.size (); j ++){ ~~^~~~~~~~~~~~~