Operating system homework, I am giving a C code $,$ and working on macbook putty,

pls give detailed explanation as I have to try it on my system step by step as per teh attachement and NOTE

NOTE:

With only one bridge the problem would be trivial.

At the output you have to show how many laps every racer completed before declaring a winner. Any extra information at the output would be nice.

Both racers should have the same probability to win the race.