Compilare: main.cpp: In function 'void Ciur()': main.cpp:16:18: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] if(ciur[i]==1) ~~~~~~^ main.cpp:15:15: note: within this loop for(i=2; i<=N; i++) ^ main.cpp:14:16: warning: iteration 499999 invokes undefined behavior [-Waggressive-loop-optimizations] ciur[i]=1; ~~~~~~~^~ main.cpp:13:15: note: within this loop for(i=3; i<=N; i+=2) ^ main.cpp: In function 'int main()': main.cpp:46:19: warning: iteration 999999 invokes undefined behavior [-Waggressive-loop-optimizations] if(frecv[i]) ~~~~~~~^ main.cpp:45:19: note: within this loop for(int i=2; i<=N; i++) ^