Compilare: main.cpp: In function 'void ciur()': main.cpp:16:14: warning: iteration 1000001 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:24:15: warning: iteration 1000001 invokes undefined behavior [-Waggressive-loop-optimizations] 24 | if(c[i]) pr[++ct] = i; | ~~~^ main.cpp:23:22: note: within this loop 23 | for(int i = 3; i <= N; i += 2) | ~~^~~~