29 processes P(1), ..., P(29) are concurrently executing on a system (see the pseudocode above with P(n)=P(29)). The shared variable called count is initialised to 6, while the semaphores s1, s2, ... , s(n-1), sn  are all initialised to 0.  What is the value of count when process P(16) executes semsignal(s15)?