Compilare: user.cpp: In function ‘int main()’: user.cpp:47:17: warning: unused variable ‘n’ [-Wunused-variable] long long a,n,s,p,e,d,k,w; ^ user.cpp:41:15: warning: iteration 1000002u invokes undefined behavior [-Waggressive-loop-optimizations] if(v[i]==0) ^ user.cpp:39:5: note: containing loop for(i=2;i<=1000005;i++) ^ user.cpp:27:15: warning: iteration 1000002u invokes undefined behavior [-Waggressive-loop-optimizations] if(v[i]==0) ^ user.cpp:25:5: note: containing loop for(i=2;i<=1000005;i++) ^