Compilare: user.cpp: In function ‘void citire()’: user.cpp:14:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, x, y; ^ user.cpp: In function ‘void bfs(int)’: user.cpp:31:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<v[p].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:62:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size()&&ok1;j++) ^