Compilare: main.cpp: In function 'int main()': main.cpp:19:13: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] 19 | e[i]=i; | ~~~~^~ main.cpp:17:21: note: within this loop 17 | for (int i=2 ; i<=N ; i++) | ~^~~ main.cpp:24:16: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] 24 | if (e[i]==i) | ~~~^ main.cpp:22:21: note: within this loop 22 | for (int i=2 ; i<=N ; i++) | ~^~~