Compilare: main.cpp: In function 'int main()': main.cpp:159:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<events.size();i++) ~^~~~~~~~~~~~~~ main.cpp:163:14: warning: variable 'ok' set but not used [-Wunused-but-set-variable] bool ok=0; ^~ main.cpp:166:14: warning: variable 'prostmaisunt' set but not used [-Wunused-but-set-variable] bool prostmaisunt=0; ^~~~~~~~~~~~