题目描述 给一列数,要求支持操作: 1.修改某个数的值 2.读入l,r,k,询问在[l,r]内选不相交的不超过k个子段,最大的和是多少. 输入 The first line contains integer n (1 ≤ n ≤ 105), showing how many numbers the sequence has. The next line contains n integers a1, a2, ..., an (|ai| ≤ 500). The third line contain…
Time limit 1000 ms Memory limit 65536 kB 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 finall…
LCIS Time Limit: 6000/2000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6069 Accepted Submission(s): 2635 Problem Description Given n integers.You have two operations:U A B: replace the Ath number by B. (index…
题目 给定一组数,要求进行若干次操作,这些操作可以分为两种类型: (1) CMD 1 beg end value 将数组中下标在[beg, end] 区间内数字都变为value (2) CMD 2 beg end 求出数组中下标在[beg ,end]区间中的所有数字的和 分析 树状数组在区间查询和单点修改情况下效率较线段树高一些,而无法像线段树一样在O(logN)的时间内完成区间修改.因此使用线段树解决.使用线段树主要的是定义好线段树节点的状态.(如代码中注释所说,状态一定要明确,且容易计算!)…
Problem Description In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic sticks which are of the same length.Now Pudge wants to do some operations on th…