I count, that all children in one group.
Then I look, whether there is in this group a child,
Which has more than one enemy in this group if yes then I consider{count}, that this child will be in the second group.
After that, I look at the second group and if I there shall find the child who has
In group more than one enemy the answer will be
" NO SOLUTION "
 Help, please. Give me some tests or show me my a mistake

You're wrong. Answer 'NO SOLUTION' is impossible. There is something else here