Опять математика

В продложение темы:
подготовка к интервью
"Have another good one, would take some time to solve:

2 parents (Dad and Mom), 2 daughters, 2 sons, 1 Cop and 1 Criminal are on the bank of a river, they need to get to the other bank on a float.

Restrictions: 1. A parent can not be with kids of an opposite gender without presence of the other parent (so Dad can't be with a daughter without Mom being present, even if other people are present) 2. A criminal can not be left with any number of people without cop being present.
3. A float can only hold 2 people plus only Dad, Mom or Cop can operate it.

I was told this puzzle was given during interview for any significant IT position in Japan

Enjoy!"

Я ее знаю,правда :) Грустно, конечно, мама не может остаться с сыном, папа с дочерью - интерстно кто кому опасен? Детки, детки...