Compilare: main.cpp: In function 'void BFS(int, int*)': main.cpp:32:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i = 0; i < v[s].size(); i++) | ~~^~~~~~~~~~~~~ main.cpp:22:16: warning: iteration 1001 invokes undefined behavior [-Waggressive-loop-optimizations] 22 | viz[i] = false; | ~~~~~~~^~~~~~~ main.cpp:21:18: note: within this loop 21 | for(i = 0; i <= 1001; i++) | ~~^~~~~~~ main.cpp:22:16: warning: 'void* __builtin_memset(void*, int, long unsigned int)' forming offset [4004, 4007] is out of the bounds [0, 4004] of object 'viz' with type 'int [1001]' [-Warray-bounds] 22 | viz[i] = false; | ~~~~~~~^~~~~~~ main.cpp:20:12: note: 'viz' declared here 20 | int i, viz[1001]; | ^~~