Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:16:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<indiceq[nod].size(); i++) ^ user.cpp: In function ‘void dfs(int)’: user.cpp:26:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<v[nod].size(); i++) ^