Lights

We have in school great non-deterministic lights. There are 4 switches and 4 rows of light. One can say that is clear and nothing can go wrong. The problem is in the last row where the lights can be switched on separately. And here we are. How you will, having only 4 switches, turn on all the lights? Reality is, that Lukáš is switching all the switchers 10 minutes until he reaches the goal. Turning the lights off works in similar way.

Today, our colleagues, specialists, came over to see it. They did't succeed.

Prepni do slovenčiny.