Compilare: main.cpp: In function 'void init(long long int&, long long int&)': main.cpp:18:39: warning: iteration 100001 invokes undefined behavior [-Waggressive-loop-optimizations] 18 | for(int i = 0; i <= N; i++) frecv[i] = 0; | ~~~~~~~~~^~~ main.cpp:18:19: note: within this loop 18 | for(int i = 0; i <= N; i++) frecv[i] = 0; | ~~^~~~ main.cpp:18:39: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [400004, 400007] is out of the bounds [0, 400004] of object 'frecv' with type 'int [100001]' [-Warray-bounds] 18 | for(int i = 0; i <= N; i++) frecv[i] = 0; | ~~~~~~~~~^~~ main.cpp:13:5: note: 'frecv' declared here 13 | int frecv[N]; | ^~~~~