28 processes P(1), ..., P(28) are concurrently executing on a system (see the pseudocode above with P(n)=P(28)). The shared variable called count is initialised to 2, while the semaphores s1, s2, ... , s(n-1), sn  are all initialised to 0.  What is the value of count when process P(13) executes semsignal(s12)?