Compilare: user.cpp: In function ‘void df(int)’: user.cpp:15:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[p].size();i++) ^ user.cpp: In function ‘void dfbc(int, int, int)’: user.cpp:31:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[nod].size();i++) ^ user.cpp:34:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(fiu!=tata) ^ user.cpp: In function ‘int main()’: user.cpp:61:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) fout<<sol[i]<<" "; fout<<"\n"; ^ user.cpp:72:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) fout<<sol[i]<<" "; ^