Compilare: user.cpp: In function ‘void DFS(int)’: user.cpp:12:3: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(j=1;j<=n;j++) ^~~ user.cpp:14:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(i=0;i<f[nod].size();i++) ^~~ user.cpp:14:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<f[nod].size();i++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:23:8: warning: unused variable ‘j’ [-Wunused-variable] {int i,j; ^