Compilare: main.cpp: In function 'void dfs(int)': main.cpp:17:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<l[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:21:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<l[nod].size();i++) ~^~~~~~~~~~~~~~ main.cpp:14:9: warning: unused variable 'vecin' [-Wunused-variable] int vecin; ^~~~~