Compilare: main.cpp: In function 'void elimina_intervale()': main.cpp:266:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<intv.size();i++){ ~^~~~~~~~~~~~ main.cpp:273:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<events.size();i++){ ~^~~~~~~~~~~~~~ main.cpp:278:17: warning: unused variable 'x' [-Wunused-variable] int x = intv[idx].first, y = intv[idx].second; ^ main.cpp:278:38: warning: unused variable 'y' [-Wunused-variable] int x = intv[idx].first, y = intv[idx].second; ^ main.cpp: In function 'int main()': main.cpp:305:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<events.size();i++){ ~^~~~~~~~~~~~~~ main.cpp:330:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0,j=0;i<intv.size();i++){ ~^~~~~~~~~~~~ main.cpp:332:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (j+1 < intv.size() && intv[j+1].first <= intv[i].second) ~~~~^~~~~~~~~~~~~