[![![enter image description here](https://i.stack.imgur.com/PLG2v.jpg)](https://i.stack.imgur.com/3UfXS.jpg)](https://i.stack.imgur.com/3UfXS.jpg)

The chef ask each of the 4 judges to make

a single slice on the whole round cake,

so they'll all have a 1/5th piece to take.

How the judges do it for fairness sake?