Compilare: main.cpp: In function 'void DFS(int)': main.cpp:17:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp: In function 'void vecini(int, int)': main.cpp:30:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[x].size();i++) ~^~~~~~~~~~~~ main.cpp:36:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vec.size()&&ok;i++) ~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<sol.size();i++) fout<<sol[i]<<'\n'; ~^~~~~~~~~~~