Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:19:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int i=0; i<l[nod].size(); i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:55:13: warning: iteration 100003 invokes undefined behavior [-Waggressive-loop-optimizations] 55 | e[i]=e[i/2]+1; | ~~~~^~~~~~~~~ main.cpp:54:19: note: within this loop 54 | for(int i=2; i<=100005; i++) | ~^~~~~~~~