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  • AMiner推荐论文:CrossNorm and SelfNorm for Generalization under Distribution Shifts2021-10-29 18:00:14

    论文链接:https://www.aminer.cn/pub/617b928b6750f842fb7c54a5?f=cs 文章的两个方法分别对应两个目标: 扩增训练数据分布。传统的 normalization 都是为了使得训练更加稳定和快速,那么作者是否能用 normalization 的方法进行数据的增强呢?答案是肯定的。一般来说,作者认为 RGB 图

  • 【数据结构优化dp】luogu_P4644 Cleaning Shifts S2021-08-10 20:02:26

    题意 给出一个时间段\(M\sim E\),有若干条区间\([l,r]\)覆盖,选择每个区间需要一定代价,求覆盖整个区间的最小代价。 \(0 \leq M \leq E \leq 86399。\) 思路 设\(f_i\)为已经覆盖了\(M \sim i\)用的最小代价。 将每条区间按右端点排序。 可得\(f_{r_i}=min\{f_{l_i-1 \sim r_i}\}+v_

  • POJ - 2376 Cleaning Shifts2021-07-24 12:00:06

    Cleaning Shifts POJ - 2376 AYIT-2021 609暑假集训第一周上 搜索和贪心 Description Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wants to have one cow working on cleaning things up and

  • POJ 2376 Cleaning Shifts2021-01-14 21:04:19

    题目如下: 数轴上有 n (1<=n<=25000)个闭区间 [ai, bi],选择尽量少的区间覆盖一条指定线段 [1, t]( 1<=t<=1,000,000)。 覆盖整点,即(1,2)+(3,4)可以覆盖(1,4)。 不可能办到输出-1 输入 第一行:N和T 第二行至N+1行: 每一行一个闭区间。 输出 选择的区间的数目,不可能办到输出-1 样例输

  • 读CS:APP第二章(整型、浮点型、字符串的字节存储形式和运算)2020-12-17 12:04:25

    Most machines encode signed numbers using a two’s-complement representation and encode floating-point numbers using IEEE Standard 754. https://www.cnblogs.com/mrblug/p/5706996.html 浮点数上溢和下溢 (之前只知道整数溢出可能会造成两个正数相加得负数,对于浮点

  • LeetCode #1427. Perform String Shifts2020-12-01 16:33:43

    题目 1427. Perform String Shifts 解题方法 先根据shift数组找到向右转的次数,对其取len(s)的模并再取绝对值,然后初始化一个长度为len(s)的列表rat,遍历s将字符填到对应位置,最后把rat合并成字符串返回即可。 时间复杂度:O(n) 空间复杂度:O(n) 代码 class Solution: def stringS

  • System: Power-of-2 Multiply by Shifts2020-09-05 02:00:41

                 

  • F. Cyclic Shifts Sorting(模拟&排序)2020-06-30 19:44:24

    F. Cyclic Shifts Sorting(模拟&排序) 传送门 思路: 模拟冒泡排序,只不过两个数交换,变成了三个数进行位置转换。 显然三个数可以顺时针走,也可以逆时针走(顺时针操作两次等价于逆时针操作一次)(顺时针操作两次等价于逆时针操作一次)(顺时针操作两次等价于逆时针操作一次)。 我们

  • CF819B Mister B and PR Shifts2020-05-09 23:01:43

      思路分析:其实这道题的暴力是十分好想的,就是硬模拟,但是看到这个n的取值范围......你懂我意思吧。 我们可以先假设有一个序列为2,1,3,2,5,那么我们如果不做处理,那么他们的值减去坐标就分别为:1,-1,0,-2,0。我们现在将最后一个数放在前面,序列变为了5,2,1,3,2。不做处理的值为:4,0

  • 【字符串】848. 字母移位2020-05-04 13:06:05

    题目:     解答: 1 class Solution { 2 public: 3 string shiftingLetters(string S, vector<int>& shifts) 4 { 5 int size = (int)S.size(); 6 int cnt = 0; 7 for (int i = size - 1; i >= 0;i--) 8 { 9

  • leetcode Perform String Shifts2020-04-18 12:04:06

    You are given a string s containing lowercase English letters, and a matrix shift, where shift[i] = [direction, amount]: direction can be 0 (for left shift) or 1 (for right shift).  amount is the amount by which string s is to be shifted. A left

  • Cleaning Shifts Vs 今年暑假不AC「OpenJ_Bailian-2376 Vs HDU-2037」2020-03-01 16:00:22

    总述 两题分别是通过 左端点从小到大排序 https://www.cnblogs.com/Little-Turtle--QJY/p/12388858.html 右端点从小到大排序 https://www.cnblogs.com/Little-Turtle--QJY/p/12389430.html 为什么这样做呢?往下看 Cleaning Shifts [其实就拿样例说明一下就很容易明白] 最后选中2

  • 挑战程序设计竞赛2.2习题:Cleaning Shifts POJ - 23762020-01-15 17:01:11

    Cleaning Shifts Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wants to have one cow working on cleaning things up and has divided the day into T shifts (1 <= T <= 1,000,00

  • (Medium) Shifting Letters - LeetCode2019-09-03 14:03:16

    Description: We have a string S of lowercase letters, and an integer array shifts. Call the shift of a letter, the next letter in the alphabet, (wrapping around so that 'z' becomes 'a').  For example, shift('a') = 'b�

  • 题解 洛谷P4644 【[Usaco2005 Dec]Cleaning Shifts 清理牛棚】2019-08-06 12:00:35

    这道题本身只是一道比较水的dp,但是……它会卡O(n^2)的算法!!! 所以,我们可以用数据结构优化!我用的线段树(单修区查多好写呀) 要注意几点:1.dp数组在起点要清零2.循环取最小值时是从t[i].l-1到t[i].r3.线段树minn要取最大4.区间排序按右端点排 先上70分代码(我先得了100分为了题解再亲测

  • POJ 2376 Cleaning Shifts 区间贪心 结构体中运算符重载2019-08-05 13:39:57

    题目链接 类似于区间调度问题,区间贪心 贪心策略:在开始时间满足条件的剩余区间中,选择结束时间最晚的区间 首先按照开始时间将所有的区间升序排列,然后在开始时间满足条件的剩余区间中,选择结束时间最晚的区间,注意本题只覆盖点就可以了,并不需要覆盖整个区间,同时也要将已经判断过

  • poj3171Cleaning Shifts-dp/线段树2019-08-04 23:05:48

    1 #include<iostream> 2 #include<cstdio> 3 #include<cmath> 4 #include<string> 5 #include<cstring> 6 #include<algorithm> 7 #include<iomanip> 8 using namespace std; 9 namespace Moxing {10 const int N=10000+20;11

  • poj 2376 Cleaning Shifts 最小区间覆盖2019-07-20 17:02:59

    Cleaning Shifts Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 40751   Accepted: 9871 Description Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wants to h

  • POJ 3171 Cleaning Shifts​ 题解 《挑战程序设计竞赛》2019-06-13 08:52:53

    为什么80%的码农都做不了架构师?>>>    POJ 3171 Cleaning Shifts铲屎官:约翰希望在时间[M,E]内保持牛舍始终有牛在打扫,有N头牛分别愿意在时间[T1,T2]内打扫并收工钱S。求最小花费。3.4熟练掌握动态规划利用数据结构高效求解是POJ 2376 Cleaning Shifts的升级版,赋予了每个

  • poj2376 Cleaning Shifts2019-05-14 21:39:02

    Description Farmer John is assigning some of his N (1 <= N <= 25,000) cows to do some cleaning chores around the barn. He always wantsto have one cow working on cleaning things up and has divided the day into T shifts (1 <= T <= 1,000,000), th

  • POJ 3171.Cleaning Shifts-区间覆盖最小花费-dp+线段树优化(单点更新、区间查询最值)2019-04-02 21:43:23

    Cleaning Shifts Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 4721   Accepted: 1593 Description Farmer John's cows, pampered since birth, have reached new heights of fastidiousness. They now require their barn to be immaculat

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