Compilare: main.cpp: In function 'void solve()': main.cpp:72:31: warning: 'void* memset(void*, int, size_t)' clearing an object of type 'class std::vector<int>' with no trivial copy-assignment; use assignment or value-initialization instead [-Wclass-memaccess] 72 | memset(adj, 0, sizeof(adj)); | ^ In file included from /usr/include/c++/10/vector:67, from main.cpp:4: /usr/include/c++/10/bits/stl_vector.h:389:11: note: 'class std::vector<int>' declared here 389 | class vector : protected _Vector_base<_Tp, _Alloc> | ^~~~~~