Compilare: user.cpp: In function ‘void citire()’: user.cpp:13:15: warning: unused variable ‘j’ [-Wunused-variable] int a,b,i,j; ^ user.cpp: In function ‘void afisare_lista()’: user.cpp:30:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ^ user.cpp: In function ‘void parcurgere_latime(int&, int&, int)’: user.cpp:62:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<v[p].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:77:13: warning: unused variable ‘i’ [-Wunused-variable] int x=1,i; ^