Compilare: user.cpp: In function ‘int main()’: user.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0 ; i < s.size(); i ++) //indexare automata de la 0 ^ user.cpp:26:9: warning: unused variable ‘n’ [-Wunused-variable] int n, total = 0;//durata totala ^