Compilare: user.cpp: In function ‘void parcurge(int, int)’: user.cpp:20:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<vecin[nod].size();++i) ^ user.cpp: In function ‘void parcurge2(int)’: user.cpp:43:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vecin[nod].size();++i) ^ user.cpp:39:9: warning: unused variable ‘i’ [-Wunused-variable] int i; ^