Compilare: main.cpp: In function 'int main()': main.cpp:80:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= t; i++) ~~^~~~ main.cpp: In function 'void Ciur()': main.cpp:27:20: warning: iteration 1000004 invokes undefined behavior [-Waggressive-loop-optimizations] if (!ciur[i]) ~~~~~~^ main.cpp:26:23: note: within this loop for (int i = 1; i <= N; i++) ^