Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K. If there is no non-empty subarray with sum at least K, return -1. Example 1: Input: A = [1], K = 1 Output: 1 Example 2: Input: A = [1,2], K = 4 Output: -1 Exa…
Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K. If there is no non-empty subarray with sum at least K, return -1. Example 1: Input: A = [1], K = 1 Output: 1 Example 2: Input: A = [1,2], K = 4 Output: -1 Exa…
Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K. If there is no non-empty subarray with sum at least K, return -1. Example 1: Input: A = [1], K = 1 Output: 1 Example 2: Input: A = [1,2], K = 4 Output: -1 Exa…
Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K. If there is no non-empty subarray with sum at least K, return -1. Example 1: Input: A = [1], K = 1 Output: 1 Example 2: Input: A = [1,2], K = 4 Output: -1 Exa…
作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 暴力求解 日期 题目地址:https://leetcode-cn.com/problems/two-sum-less-than-k/ 题目描述 Given an array A of integers and integer K, return the maximum S such that there exists i < j with A[i] +…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 队列 日期 题目地址:https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k/ 题目描述 Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K.…
1007 Maximum Subsequence Sum (25分) Given a sequence of K integers { N1, N2, ..., NK }. A continuous subsequence is defined to be { Ni, Ni+1, ..., Nj } where 1≤i≤j≤K. The Maximum Subsequence is the continuous subsequence which has…
Minimum Sum Time Limit: 16000/8000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 3769 Accepted Submission(s): 872 Problem Description You are given N positive integers, denoted as x0, x1 ... xN-1. Then give you…
题意:二维平面上 N 个高度为 Hi 建筑物,M次询问,每次询问输出 位于坐标(x ,y)左下角(也就是xi <= x && yi <= y)的建筑物中的第k高的建筑物的高度,如果不存在输出-1. 思路:可以发现k很小,最大才是10.对于区间第k大的问题,如果k很小的话,线段树也是可以的,,当然这里要用到 区间合并,对于每个节点 记录其 孩子中 前2*k个高度(不一定非要2*k,只要大于k就可以,至于为什么,自己可以想想),进行合并排序. #include <cstdio…
题目描述: 这是一道数据结构题. 我们拥有一个长度为n的数组a[i]. 我们有m次操作.操作有两种类型: 0 i val:表示我们要把a[i]修改为val; 1 l r k:表示我们要求出区间[l,r]的最多k个不相交子区间,并使得各个子区间的数的和尽量大,需要注意的是,我们也可以不选择区间,这时候数的和为0. N,m不超过10^5. 所有的ai和val的绝对值均不超过500.k不超过20.询问的数目不超过10000. 抛开k段先不管,假如要求连续一段的最大和,该怎么做? 对于线段树的一段[L,…
Given an array of integers nums and a positive integer k, find whether it's possible to divide this array into knon-empty subsets whose sums are all equal. Example 1: Input: nums = [4, 3, 2, 3, 5, 2, 1], k = 4 Output: True Explanation: It's possible…
法一:暴力$O({n^2})$看脸过 #include<bits/stdc++.h> using namespace std; typedef long long ll; ],sum[]; int main(){ int n,k; cin>>n>>k; ;i<=n;i++){ cin>>a[i];sum[i]=sum[i-]+a[i];} bool flag=false; ;i<n;i++){ ;j<=n;j++){ if(sum[j]-s…
#include <iostream> #include <algorithm> #include <cstring> using namespace std; typedef long long LL; + ; int a[maxn]; LL sum[maxn]; int main(){ std::ios::sync_with_stdio(false); int n, k; cin >> n >> k; memset(sum, , sizeof…
原题链接在这里:https://leetcode.com/problems/two-sum-less-than-k/ 题目: Given an array A of integers and integer K, return the maximum S such that there exists i < j with A[i] + A[j] = S and S < K. If no i, jexist satisfying this equation, return -1. Example…
Problem Statement There is an integer sequence A of length N. Find the number of the pairs of integers l and r (1≤l≤r≤N) that satisfy the following condition: Al xor Al+1 xor … xor Ar=Al + Al+1 + … + Ar Here, xor denotes the bitwise exclusive OR. Def…
Given an array A of integers and integer K, return the maximum S such that there exists i < j with A[i] + A[j] = S and S < K. If no i, j exist satisfying this equation, return -1. Example 1: Input: A = [34,23,1,24,75,33,54,8], K = 60 Output: 58 Expl…
POJ 1741. Tree Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 34141 Accepted: 11420 Description Give a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and…
A. XOR 求出所有数的异或和$sum$,将所有数and上$sum$,然后求线性基,则选取$sum$的所有$1$对应的基最优. 时间复杂度$O(n\log x)$. #include<cstdio> #include<cstdlib> #include<algorithm> #include<ctime> using namespace std; typedef long long ll; int Case,n,i,j;ll ans,sum,A,B,a[1…
