Compilare: main.cpp: In function 'int main()': main.cpp:32:13: warning: unused variable 's' [-Wunused-variable] int n,x,s=0; ^ main.cpp:36:17: warning: iteration 99999 invokes undefined behavior [-Waggressive-loop-optimizations] phi1[i] = phi(i); ~~~~~~~~^~~~~~~~ main.cpp:35:20: note: within this loop for(int i =1 ;i<=100000;++i) ~^~~~~~~~