以下Python代码用于记录多个输入数中的最大数和最小数（输入-999则输入结束）：

now_num = int(input())
min_num = max_num = now_num
while now_num != -999:
    if max_num < now_num:
       max_num = now_num
    if min_num > now_num:
       min_num = now_num
    now_num = int(input())
print(min_num, max_num)