Compilare: main.cpp: In function 'void dfs(int)': main.cpp:16:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(ind[nod] < g[nod].size()) { ~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:42:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < v.size(); i += 2) { ~~^~~~~~~~~~ main.cpp:48:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 1; i < ans.size(); i++) { ~~^~~~~~~~~~~~