Compilare: main.cpp: In function 'void ciur()': main.cpp:16:14: warning: iteration 250001 invokes undefined behavior [-Waggressive-loop-optimizations] 16 | c[i] = 1; | ~~~~~^~~ main.cpp:15:22: note: within this loop 15 | for(int i = 3; i <= N; i += 2) | ~~^~~~ main.cpp:25:15: warning: iteration 500002 invokes undefined behavior [-Waggressive-loop-optimizations] 25 | if(c[i]) { | ~~~^ main.cpp:24:22: note: within this loop 24 | for(int i = 3; i <= N; i++) | ~~^~~~ main.cpp:30:15: warning: iteration 500002 invokes undefined behavior [-Waggressive-loop-optimizations] 30 | if(c[i]) v[i] = c[i]; | ~~~^ main.cpp:29:22: note: within this loop 29 | for(int i = 3; i <= N; ++i) | ~~^~~~