猜题比赛

Grade Open Time Friday, 19 September 2014, 10:05 am
Discount 0.8 Time Discount Friday, 26 September 2014, 10:05 am
Allow late Yes Close Time Friday, 26 September 2014, 10:05 am
Input file lftree.in Output file lftree.out

描述

无题目描述,猜测输入数据,并给出相应的输出。