# function npown(n)
# {
#  var res = n;
#  var   k = n-1;
#  while (k)
#       {
#        res = res*n;
#          k = k-1;
#       }
#  return res;
# }
#
# proponowane wyrażenie watch
# n=1 k=3 res=2

	read  0
	store 1         # r1 = n
	store 2         # r2 = res = n

	sub  =1
	store 3         # r3 = k   = n-1

	load =0         #
	sub   1         #
	jgtz  negative  #
	jzero zero      # n <= 0?

	load  3

while:	jzero endwhile
	load  2
	mult  1
	store 2         # res = res * n

	load  3
	sub  =1
	store 3         # k = k-1
	jump while

endwhile: write 2         # return
zero:     halt
negative: halt