题意翻译 给出一个长度为n 的数列,a1 a2 ,...an ,有q 个询问,每个询问给出数对(i,j),需要你给出ai ai+1 ,...,aj 这一段中有多少不同的数字 题目描述 English VietnameseGiven a sequence of n numbers a 1 a 2 ..., a n and a number of d-queries. A d-query is a pair (i, j) (1 ≤ i ≤ j ≤ n). For each…
D. Powerful array time limit per test seconds memory limit per test megabytes input standard input output standard output An array of positive integers a1, a2, ..., an ..., ar, ≤ l ≤ r ≤ n. For every positive integer s denote by Ks the number of occ…
Sona Time Limit:5000MS Memory Limit:65535KB 64bit IO Format: Submit Status Practice NBUT 1457 Appoint description: Description Sona, Maven of the Strings. Of cause, she can play the zither. Sona can't speak but she can make fancy music. Her…
本文版权归ljh2000和博客园共有,欢迎转载,但须保留此声明,并给出原文链接,谢谢合作. 本文作者:ljh2000作者博客:http://www.cnblogs.com/ljh2000-jump/转载请注明出处,侵权必究,保留最终解释权! Description 墨墨购买了一套N支彩色画笔(其中有些颜色可能相同),摆成一排,你需要回答墨墨的提问.墨墨会像你发布如下指令: 1. Q L R代表询问你从第L支画笔到第R支画笔中共有几种不同颜色的画笔. 2. R P Col 把第P支画笔替换为颜色C…
看到题目就可以想到hash 然后很自然的联想到可持久化权值线段树 WA:base取了偶数 这道题还可以用莫队做,比线段树快一些 可持久化线段树: #include<bits/stdc++.h> #define ll long long #define uint unsigned int #define ull unsigned long long #define inf 4294967295 #define N 100005 #define M 100005 #define base 1000…
