Compilare: main.cpp: In function 'void dfs(int, int)': main.cpp:33:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0; i<v[vf].size(); i++) ~^~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:69:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(c[j].size() - 1 > aux[j] && i < j) ~~~~~~~~~~~~~~~~^~~~~~~~