# 992e724c9c77a37d76307a48909f883b543d97cc808cf1ac5a42e876087ada63 Elan 1.6.1 guest default_profile valid

main
  variable st set to new Set<of Int>()
  set st to st.addFromList([3, 5, 7])
  print st.length()
  set st to st.add(7)
  print st.length()
  set st to st.remove(3)
  print st.length()
  set st to st.remove(3)
  print st.length()
  print st
end main
