[ZJOI2012]波浪

Grade Open Time Friday, 19 September 2014, 10:07 am
Discount 0.8 Time Discount Friday, 26 September 2014, 10:07 am
Allow late Yes Close Time Friday, 26 September 2014, 10:07 am
Input file wavel.in Output file wavel.out
noi贴吧的置顶帖的某压缩包里有题目描述,由于把题目描述粘到这里难度太大,请自行查看题目描述