题目:http://www.lydsy.com/JudgeOnline/problem.php?id=3028题解:列出母函数乘起来化简之后再展开,用插板法即可。代码: 1 #include 2 3 #include 4 5 #include 6 7 #include 8 9 #includ... Read More
posted @ 2015-03-10 16:11 ZYF-ZYF Views(273) Comments(0) Diggs(0) Edit
3771: TripleTime Limit: 20 SecMemory Limit: 64 MBSubmit: 51Solved: 30[Submit][Status]Description我们讲一个悲伤的故事。从前有一个贫穷的樵夫在河边砍柴。这时候河里出现了一个水神,夺过了他的斧头,说:“这把斧... Read More
posted @ 2015-03-10 15:36 ZYF-ZYF Views(296) Comments(0) Diggs(0) Edit