Initially you have a semaphore s set to $0.$

Process p$1$ executes the following code:

s$.$wait$()$;

s$.$wait$()$;

s$.$signal$()$;

Process p$2$ executes the following code:

s$.$signal$()$;

s$.$signal$()$;

What is the value of s after both the processes terminate? Which process will have its first statement terminate first?