Compilare: user.cpp: In function ‘void dfs(int)’: user.cpp:15:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < Arb[nod].size(); i++) ^ user.cpp: In function ‘int main()’: user.cpp:37:16: warning: unused variable ‘j’ [-Wunused-variable] int nr, i, j, salturi[N]; ^ user.cpp: In function ‘int f(int, int, int)’: user.cpp:32:1: warning: control reaches end of non-void function [-Wreturn-type] } ^