Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < g[nod].size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:95:12: warning: unused variable 'j' [-Wunused-variable] int i, j, root, m; ^ main.cpp:95:15: warning: unused variable 'root' [-Wunused-variable] int i, j, root, m; ^~~~