Compilare: main.cpp: In function 'void vecini1(int)': main.cpp:9:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[start].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[k].size();j++) ~^~~~~~~~~~~~ main.cpp: In function 'void vecini2(int)': main.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[start].size();i++) ~^~~~~~~~~~~~~~~~ main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[k].size();j++) ~^~~~~~~~~~~~