Compilare: main.cpp: In function 'int main()': main.cpp:39:18: warning: unused variable 'op' [-Wunused-variable] 39 | int i, x, y, op; | ^~ main.cpp:42:14: warning: iteration 200004 invokes undefined behavior [-Waggressive-loop-optimizations] 42 | c[i] = 1; | ~~~~~^~~ main.cpp:41:18: note: within this loop 41 | for(i = 1; i <= 1000005 ; i++) | ~~^~~~~~~~~~