Help with Intervals Time Limit: 6000MS Memory Limit: 131072K Total Submissions: 12474 Accepted: 3140 Case Time Limit: 2000MS Description LogLoader, Inc. is a company specialized in providing products for analyzing logs. While Ikki is working on g…
题意:给你一些区间操作,让你输出最后得出的区间. 解法:区间操作的经典题,借鉴了网上的倍增算法,每次将区间乘以2,然后根据区间开闭情况做微调,这样可以有效处理开闭区间问题. 线段树维护两个值: cov 和 rev ,一个是覆盖标记,0表示此区间被0覆盖,1表示被1覆盖,-1表示未被覆盖, rev为反转标记,rev = 1表示反转,0表示不翻转 所以集合操作可以化为如下区间操作: U l r: 把区间[l,r]覆盖成1I l r: 把[0,l)(r,MAX]覆盖成0 D l r: …
Description LogLoader, Inc. is a company specialized in providing products for analyzing logs. While Ikki is working on graduation design, he is also engaged in an internship at LogLoader. Among his tasks, one is to write a module for manipulating ti…
Tunnel Warfare Time Limit: 1000MS Memory Limit: 131072K Total Submissions: 7876 Accepted: 3259 Description During the War of Resistance Against Japan, tunnel warfare was carried out extensively in the vast areas of north China Plain. Generally sp…
Count Color Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 42940 Accepted: 13011 Description Chosen Problem Solving and Program design as an optional course, you are required to solve all kinds of problems. Here, we get a new problem.…
Balanced Lineup Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 53703 Accepted: 25237 Case Time Limit: 2000MS Description For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer Joh…
Mayor's posters Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://poj.org/problem?id=2528 Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at al…
Mayor's posters Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their electoral posters at all places at their whim. The city council has finally decided to build an ele…
Description Ted has a new house with a huge window. In this big summer, Ted decides to decorate the window with some posters to prevent the glare outside. All things that Ted can find are rectangle posters. However, Ted is such a picky guy that in ev…
题目链接: 传送门 Buy Tickets Time Limit: 4000MS Memory Limit: 65536K Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue- The Lunar New Year was approaching, but unluckily t…
Balanced Lineup Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 32820 Accepted: 15447 Case Time Limit: 2000MS Description For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer Joh…
Balanced Lineup Time Limit: 5000MS Memory Limit: 65536K Total Submissions: 42489 Accepted: 20000 Case Time Limit: 2000MS Description For the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer Joh…
题目不说了,可以用线段树或者单调队列,下面附上代码. 线段树: #include <iostream> #include <stdio.h> #include <algorithm> /* AC 线段树每个节点存储对应区间的最大值.最小值,然后直接查询即可.6594MS. */ using namespace std; ; const int INF=0x3f3f3f3f; int minans[maxn],maxans[maxn]; int small,bigger;…
