Compilare: main.cpp: In function 'void conex(int)': main.cpp:28:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[nod].size(); j++) ~^~~~~~~~~~~~~~ main.cpp: In function 'void conext(int)': main.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<vt[nod].size(); j++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:74:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<ans[i].size(); j++) ~^~~~~~~~~~~~~~