2 readers and 2 writers making 5 accesses each
read: 99999
read: 99999
wrote: 1
read: 1
read: 1
read: 1
read: 1
read: 1
read: 1
read: 1
read: 1
wrote: 100000
wrote: 2
wrote: 3
wrote: 100000
wrote: 100001
wrote: 100000
wrote: 100001
wrote: 100000
wrote: 100001