N ski slopes meet at the bottom of a valley, the lifts to the
slopes are here in one place, there are waiting lines for the
lifts.
After how many laps are we expected to ski on the most difficult
piste (one particular slope),
a) if we follow the tactic of always standing in the shortest
queue? (The queues have random lenght.)
b) And if we don't slide down on a track until we did one slide
on all the others?