Compilare: main.cpp: In function 'void ciur()': main.cpp:10:15: warning: iteration 1000001 invokes undefined behavior [-Waggressive-loop-optimizations] 10 | phi[i]=i; | ~~~~~~^~ main.cpp:9:18: note: within this loop 9 | for(int i=1;i<=N;i++) | ^ main.cpp:12:13: warning: iteration 1000000 invokes undefined behavior [-Waggressive-loop-optimizations] 12 | if(phi[i]==i) | ~~~~~^ main.cpp:11:18: note: within this loop 11 | for(int i=2;i<=N;i++) | ^