摘要： 转自九野：http://blog.csdn.net/qq574857122/article/details/43643135题目链接：点击打开链接题意:给定n ，k下面n个数表示有一个n的排列，每次操作等概率翻转一个区间，操作k次。问：k次操作后逆序数对个数的期望。思路：dp[i][j]表示 a[i... 阅读全文

摘要： 传送门C. Second price auctiontime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputNowadays, most of the ... 阅读全文

摘要： 传送门The Experience of LoveTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 221Accepted Submission(s)... 阅读全文

摘要： 传送门直接转田神的了：Milking GridTime Limit: 3000MSMemory Limit: 65536KTotal Submissions: 6665Accepted: 2824DescriptionEvery morning when they are milked, the F... 阅读全文

摘要： 传送门C. Watto and Mechanismtime limit per test3 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputWatto, the owner of a s... 阅读全文

摘要： 传送门D. R2D2 and Droid Armytime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputAn army of n droids is ... 阅读全文

摘要： 传送门D. Good Substringstime limit per test2 secondsmemory limit per test512 megabytesinputstandard inputoutputstandard outputYou've got string s, consis... 阅读全文

摘要： 传送门Phone ListTime Limit: 3000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 11633Accepted Submission(s): 3965Prob... 阅读全文

摘要： 传送门FlyerTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1718Accepted Submission(s): 622Problem Des... 阅读全文

摘要： 传送门F -Blue JeansTime Limit:1000MSMemory Limit:65536KB64bit IO Format:%I64d & %I64uSubmitStatusDescriptionThe Genographic Project is a research partner... 阅读全文