In a computer game, coconuts fall from a tree.  Three monkeys on
the ground must catch the coconuts before they hit the ground and
eat them.  Suppose that a new coconut falls between 0 and 250
milliseconds with uniform distribution.  The monkey that catches
the coconut is busy for 500 milliseconds to eat it before it can
catch another one.  The game ends when a coconut hits the ground.

Model the game using a Producer-Consumer pattern.  Your program
should produce a trace showing the events of a game.  Run your
program a few times to count how many coconuts fall from the tree
before the game ends (usually between 10 and 19 on the
instructor's system).

------------------------------------------------------------------


Nut #0 dropped at 21
Monkey #0 catches nut #0 at 48
Nut #1 dropped at 148
Monkey #1 catches nut #1 at 156
Nut #2 dropped at 318
Monkey #2 catches nut #2 at 326
Nut #3 dropped at 388
Monkey #0 catches nut #3 at 558
Nut #4 dropped at 568
Nut #5 dropped at 598
Monkey #1 catches nut #4 at 668
Nut #6 dropped at 718
Nut #7 dropped at 798
Monkey #2 catches nut #5 at 838
Nut #8 dropped at 847
Nut #9 dropped at 968
Game ends at 976. 10 nuts