StudentStaff_ID=int(input("Enter your Enter your student/staff ID"))
if(len(StudentStaff_ID)!=8):
    print("Invalid input. You must enter a 8-digit number.")
elif(StudentStaff_ID<20000000):
    Student_Name=input("Enter Your Name")
    Student_cName=input("Enter your program of study")
    Student_Campus=input("Enter your campus of enrolment")
    print("Welcome to Western Sydney University", Student_Name,".You are studying", Student_cName,"in", Student_Campus,".")
elif(StudentStaff_ID>20000000):
    Staff_Name=input("Enter Your Name")
    Staff_jTitle=input("Enter your job title")
    Staff_School=input("Which school do you work for")
    print("Welcome back", Staff_Name,".You are", Staff_jTitle,"in", Staff_School,".")