Compilare: user.cpp: In function ‘int main()’: user.cpp:59:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(next < ans.size()){ ^ user.cpp:14:9: warning: variable ‘n’ set but not used [-Wunused-but-set-variable] int n, m, i, nr, nod, e, to, x, y, curent, next; ^