/in/foo.cc: In function 'int main()':
/in/foo.cc:8:42: error: 'ord' was not declared in this scope
  for(short i=1;i<=m;i++)next_permutation(ord+1,ord+1+n);
                                          ^~~
/in/foo.cc:9:30: error: 'ord' was not declared in this scope
  for(short i=1;i<n;i++)cout<<ord[i]<<" ";
                              ^~~
/in/foo.cc:10:8: error: 'ord' was not declared in this scope
  cout<<ord[n];
        ^~~