Mario is world-famous plumber. His “burly” figure and amazing jumping ability reminded in our memory. Now the poor princess is in trouble again and Mario needs to save his lover. We regard the road to the boss’s castle as a line (the length is n), on
题目大概:求区间内x出现的次数 出题人yjy Description ZJK 给你一个长度为 n 的数列和 m 次询问,每次询问从第 l 个到第 r 个数中,数 x 出现了多少次.Input第一行一个整数 n,第二行 n 个整数,表示这个数列.第三行一个整数 m,表示询问数.下面 m 行,每行三个整数 l, r, x,表示询问[l, r]之间数 x 出现的次数Output对于每个询问操作,输出该询问的答案.答案之间用换行隔开,一共 m 行.Example61 1 2 3 3 181 6 13 5
2018-09-01 23:02:46 问题求解: 问题求解: 最开始的时候,一眼看过去就是一条 dp 嘛,保存每个数字结尾的长度和,最后求和就好,至于长度如何求,本题中需要用滑动窗口来维护. 很好的题目,将滑动窗口算法和动态规划巧妙的结合了起来. public int numSubarrayProductLessThanK(int[] nums, int k) { if (k <= 1) return 0; int res = 0; int begin = 0; int cur = 1; fo
Super Mario Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3313 Accepted Submission(s): 1548 Problem Description Mario is world-famous plumber. His "burly" figure and amazing jumping a
K-th Number Time Limit: 20000MS Memory Limit: 65536K Total Submissions: 43315 Accepted: 14296 Case Time Limit: 2000MS Description You are working for Macrohard company in data structures department. After failing your previous task about key inse
题目链接 Problem Description Mr. Frog has an integer sequence of length n, which can be denoted as a1,a2,⋯,an There are m queries. In the i-th query, you are given two integers li and ri. Consider the subsequence ali,ali+1,ali+2,⋯,ari. We can denote the
Distance on the tree DSM(Data Structure Master) once learned about tree when he was preparing for NOIP(National Olympiad in Informatics in Provinces) in Senior High School. So when in Data Structure Class in College, he is always absent-minded about
Sequence II Time Limit: 9000/4500 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 849 Accepted Submission(s): 204 Problem Description Mr. Frog has an integer sequence of length n, which can be denoted as a1,a2,⋯
#6278. 数列分块入门 2 内存限制:256 MiB时间限制:500 ms标准输入输出 题目类型:传统评测方式:文本比较 上传者: hzwer 提交提交记录统计测试数据讨论 6 题目描述 给出一个长为 nn 的数列,以及 nn 个操作,操作涉及区间加法,询问区间内小于某个值 xx 的元素个数. 输入格式 第一行输入一个数字 nn. 第二行输入 nn 个数字,第 ii 个数字为 a_iai,以空格隔开. 接下来输入 nn 行询问,每行输入四个数字 \mathrm{opt}opt.ll.r