;; file: countEven.s
;; author: MCS-178
;; date: Fri Sep  6 09:31:56 CDT 2019
;;
;; This program first reads in a positive integer n that tells
;; how many integers will follow.  Then it reads in the next n
;; integers and prints how many of these are even.
;;
;; The SLIM code translates the following python code:
;;
;; n = int(input())
;; oddCount = 0
;; for i in range(0, n):
;;     ai = int(input())
;;     count += ai % 2
;; print(n - oddCount)

    allocate-registers one two n oddCount loop end test ai tmp i evenCount

    li one 1
    li two 2

    li loop loopL
    li end endL

    read n
    li oddCount 0
    li i 0

loopL:
    slt test i n
    jeqz test end
    read ai
    rem tmp ai two
    add oddCount oddCount tmp
    add i i one
    j loop

endL:
    sub evenCount n oddCount
    write evenCount
    halt