You have n boxes in a line on the table numbered 1...n from left to right. Your task is to simulate 4 kinds of commands: • 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y ) • 2 X Y : move box X to the right to Y (igno…
题目链接:https://vjudge.net/problem/UVA-12657 题目大意:输入n,m  代表有n个盒子 每个盒子最开始按1~n排成一行  m个操作, 1 x y  :把盒子x放到y的左边 2 x y: 把盒子x放到y 的右边 3 x y:调换x y盒子的位置 4    表示反转整条链 思路:也是很明显的暴力 模拟 .  但是值得提的是 虽然是暴力,但是却是用的双向链表来暴力. 有很多要注意的地方 : 当操作4的时候,我们可以把本次操作记录一下,不必直接把全部的位置反转 试想一…
题目链接:https://uva.onlinejudge.org/external/126/12657.pdf 题意: 给你一个从1~n的数,然后给你操作方案 • 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y )• 2 X Y : move box X to the right to Y (ignore this if X is already the right of Y )• 3…
一定要注意swap(x, y),x, y可能相邻! #include <cstdio> #define N 100005 #define ll long long int n, m; struct node{ int l, r; node() : l(), r() {} node(int l_, int r_) : l(l_), r(r_) {} }num[N]; void init() { ; i <= n + ; i++) num[i].l = i - , num[i].r = i…
Boxes in a Line You have n boxes in a line on the table numbered 1 . . . n from left to right. Your task is to simulate 4 kinds of commands: • 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y ) • 2 X Y : move box X to th…
12657 - Boxes in a Line You have n boxes in a line on the table numbered 1 . . . n from left to right. Your task is to simulate 4kinds of commands:• 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y )• 2 X Y : move box X…
Boxes in a Line You have n boxes in a line on the table numbered 1 . . . n from left to right. Your task is to simulate 4 kinds of commands: ? 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y ) ? 2 X Y : move box X to th…
  You have n boxes in a line on the table numbered 1 . . . n from left to right. Your task is to simulate 4kinds of commands: • 1 X Y : move box X to the left to Y (ignore this if X is already the left of Y ) • 2 X Y : move box X to the right to Y (i…
 省赛B题....手写链表..其实很简单的.... 比赛时太急了,各种手残....没搞出来....要不然就有金了...注:对相邻的元素需要特判..... Problem B Boxes in a Line You have n boxes in a line on the table numbered 1~n from left to right. Your task is to simulate 4 kinds of commands: 1 X Y: move box X to the lef…
CDQ分治入门 简介 CDQ分治是一种特别的分治方法,它由CDQ(陈丹琦)神犇于09国家集训队作业中首次提出,因此得名.CDQ分治属于分治的一种.它一般只能处理非强制在线的问题,除此之外这个算法作为某些复杂算法的替代品几乎是没有缺点的. 深入 对于一个数据结构题而言(或者需要运用数据结构的地方),我们无非就是做两件操作,一是修改,二是查询. 对于修改而言,有插入,删除,变更(其实等价于删除再插入)这几种方式. 那么查询的本质是什么呢?我们思考所遇到过的数据结构题,可以发现查询实际上就在做一件事情…