CF1746F.Kazaee
省选/NOI-
通过率:0%
时间限制:3.00s
内存限制:256MB
AC君温馨提醒
该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。
题目描述
You have an array a consisting of n positive integers and you have to handle q queries of the following types:
- 1 i x: change ai to x,
- 2 l r k: check if the number of occurrences of every positive integer in the subarray al,al+1,…ar is a multiple of k (check the example for better understanding).
你有一个由 n 个正整数组成的数组 a,需要处理 q 个如下类型的查询:
- 1 i x:将 ai 修改为 x;
- 2 l r k:检查子数组 al,al+1,…,ar 中每个正整数的出现次数是否均为 k 的倍数(参见示例以更好理解)。
输入格式
The first line of the input contains two integers n and q (1≤n,q≤3⋅105), the length of a and the number of queries.
Next line contains n integers a1,a2,…an (1≤ai≤109) — the elements of a.
Each of the next q lines describes a query. It has one of the following forms.
- 1 i x, (1≤i≤n , 1≤x≤109), or
- 2 l r k, (1≤l≤r≤n , 1≤k≤n).
输入的第一行包含两个整数 n 和 q(1≤n,q≤3⋅105),分别表示数组 a 的长度和查询次数。
下一行包含 n 个整数 a1,a2,…an(1≤ai≤109)——即数组 a 的元素。
接下来的 q 行,每行描述一个查询,其格式为以下两种之一:
- 1 i x(其中 1≤i≤n,1≤x≤109),或
- 2 l r k(其中 1≤l≤r≤n,1≤k≤n)。
输出格式
For each query of the second type, if answer of the query is yes, print "YES", otherwise print "NO".
对于每个第二类查询,如果查询的答案为“是”,则输出 “YES”,否则输出 “NO”。
输入输出样例
输入#1
10 8 1234 2 3 3 2 1 1 2 3 4 2 1 6 2 1 1 1 2 1 6 2 2 1 9 2 1 10 5 2 1 9 3 1 3 5 2 3 10 2
输出#1
NO YES NO YES YES
说明/提示
In the first query, requested subarray is [1234,2,3,3,2,1], and it's obvious that the number of occurrence of 1 isn't divisible by k=2. So the answer is "NO".
In the third query, requested subarray is [1,2,3,3,2,1], and it can be seen that the number of occurrence of every integer in this sub array is divisible by k=2. So the answer is "YES".
In the sixth query, requested subarray is [1,2,3,3,2,1,1,2,3], and it can be seen that the number of occurrence of every integer in this sub array is divisible by k=3. So the answer is "YES".
在第一次查询中,所请求的子数组为 [1234,2,3,3,2,1],显然数字 1 的出现次数不能被 k=2 整除。因此答案为 “NO”。
在第三次查询中,所请求的子数组为 [1,2,3,3,2,1],可以看出该子数组中每个整数的出现次数均可被 k=2 整除。因此答案为 “YES”。
在第六次查询中,所请求的子数组为 [1,2,3,3,2,1,1,2,3],可以看出该子数组中每个整数的出现次数均可被 k=3 整除。因此答案为 “YES”。
输入解题思路,AI测评打分。不知道怎么写?