Compilare: main.cpp:17:11: warning: built-in function 'log2' declared as non-function [-Wbuiltin-declaration-mismatch] 17 | long long log2[2 * NMAX]; | ^~~~ main.cpp: In function 'void dfs(long long int, long long int)': main.cpp:29:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for (i = 0; i < children[node].size(); ++i) | ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:61:24: warning: unused variable 'j' [-Wunused-variable] 61 | long long n, q, i, j, a, b, p; | ^