Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:30:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < queries.size(); i++){ ~~^~~~~~~~~~~~~~~~