Compilare: user.cpp: In function ‘int main()’: user.cpp:55:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(p = 1 ; p <= (1 << qqq) ; p++) ^ user.cpp:26:41: warning: variable ‘ppInit’ set but not used [-Wunused-but-set-variable] unsigned long long r1, r2, pp = 1 , ppInit; ^ user.cpp:27:27: warning: unused variable ‘i’ [-Wunused-variable] unsigned long long p, i; ^