D. Duff in Beach Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/588/problem/D Description While Duff was resting in the beach, she accidentally found a strange array b0, b1, ..., bl - 1 consisting of l positive integers. Th…

题目链接: B. Duff in Beach time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output While Duff was resting in the beach, she accidentally found a strange array b0, b1, ..., bl - 1 consisting of l posit…

题意  数字串a[0---n-1], 通过不断的重复组成了 b[0,---l-1]l<10^18, 让你计算出 长度小于等于k的最长非递减子序列,满足,取得第 i 个取得是 L1 第i+1个取得是L2  ------ L1/n +1 = L2, 通过这个我们先对原数组进行排序,排完后使用vector去计算dp[i][j] 及时 第i个数放在第j位的方案总数, 然后我们依次枚举放1 个 2 个3个...k, 贡献分别是  l/n,l/n-1....1,这样再枚举那最后的余下的那一些. #inclu…

D. Duff in Beach Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 无 Description Master Mind KongMing gave Fei Zhang a secrete master plan stashed in a pocket. The plan instructs how to deploy soldiers on the four corners of the city wall. Unfortunately, w…

A.Duff and Weight Lifting(思维) 显然题目中只有一种情况可以合并 2^a+2^a=2^(a+1).我们把给出的mi排序一下,模拟合并操作即可. # include <cstdio> # include <cstring> # include <cstdlib> # include <iostream> # include <vector> # include <queue> # include <sta…

D. Duff in Beach Description Master Mind KongMing gave Fei Zhang a secrete master plan stashed in a pocket. The plan instructs how to deploy soldiers on the four corners of the city wall. Unfortunately, when Fei opened the pocket he found there are o…

2021-10-14 P2577 [ZJOI2004]午餐 2021-10-13 CF815C Karen and Supermarket(小小紫题,可笑可笑) P6748 『MdOI R3』Fallen Lord(sort(a+1,a+1+n,greater<int>()); 真好用) P4161 [SCOI2009]游戏 P1707 刷题比赛 2021-10-12 CF1573A Countdown P2717 寒假作业 P7868 [COCI2015-2016#2] VUDU P1660…

B. Pasha and PhonePasha has recently bought a new phone jPager and started adding his friends' phone numbers there. Each phone number consists of exactly n digits. Also Pasha has a number k and two sequences of length n / k (n is divisible by k) a1, …

在看strcpy.memcpy等的实现发现用了内存对齐,每一个word拷贝一次的办法大大提高了实现效率,参加该blog(http://totoxian.iteye.com/blog/1220273). duff's device也是利用了类似的原理减少比较的次数来提高了效率. 前几天在网上看见了一段代码,叫做“Duff's Device”,后经验证它曾出现在Bjarne的TC++PL里面: void send( int * to, int * from, int count)         …

//   B. Duff in Love time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Duff is in love with lovely numbers! A positive integer x is called lovely if and only if there is no such positive int…