Description A sequence of N positive integers (10 < N < 100 000), each of them less than or equal 10000, and a positive integer S (S < 100 000 000) are given. Write a program to find the minimal length of the subsequence of consecutive elements o…

Subsequence Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 14698   Accepted: 6205 Description A sequence of N positive integers (10 < N < 100 000), each of them less than or equal 10000, and a positive integer S (S < 100 000 000) ar…

Subsequence POJ - 3061 给定长度为n的数列整数a0,a1,a2-an-1以及整数S.求出总和不小于S的连续子序列的长度的最小值,如果解不存在输出0. 反复推进区间的开头和末尾,来求取满足条件的最小区间的方法称为取尺法. #include <cstdio> #include <iostream> #include <cmath> #include <algorithm> #include <string> #include &…

题面 题意:给你一个长度为n(n<100000)的数组,让你找到一个最短的连续子序列,使得子序列的和>=m  (m<1e9) 题解: 1 显然我们我们可以二分答案,然后利用前缀和判断是否可行,这样是O(nlgn)的   注意没有答案 ans输出0 #include<cstdio> #include<cstdlib> #include<iostream> #include<cstring> using namespace std; ],l,r…

Description A sequence of N positive integers (10 < N < 100 000), each of them less than or equal 10000, and a positive integer S (S < 100 000 000) are given. Write a program to find the minimal length of the subsequence of consecutive elements o…

题目链接 Problem Description Alice are given an array A[1..N] with N numbers. Now Alice want to build an array B by a parameter K as following rules: Initially, the array B is empty. Consider each interval in array A. If the length of this interval is le…

<题目链接> 题目大意: 给定一个整数序列,求出绝对值小于等于k的有序对个数. 解题分析: $O(nlong(n))$的二分很好写,这里就不解释了.本题尺取$O(n)$也能做,并且效率很不错. 尺取: #include <bits/stdc++.h> using namespace std; )]; int main(){ int T,n,k;scanf("%d",&T); while(T--){ scanf("%d%d",&…

https://vjudge.net/problem/POJ-3061 尺取发,s和t不断推进的算法.因为每一轮s都推进1所以复杂度为O(n) #include<iostream> #include<cstdio> #include<queue> #include<cstring> #include<algorithm> #include<cmath> #include<stack> #define lson l, m,…

任意门:http://codeforces.com/contest/1073/problem/C C. Vasya and Robot time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vasya has got a robot which is situated on an infinite Cartesian plane, i…

1686 第K大区间 基准时间限制:1 秒 空间限制:131072 KB 分值: 40 难度:4级算法题 定义一个区间的值为其众数出现的次数.现给出n个数,求将所有区间的值排序后,第K大的值为多少. 众数(统计学/数学名词)_百度百科 Input 第一行两个数n和k(1<=n<=100000,k<=n*(n-1)/2) 第二行n个数,0<=每个数<2^31 Output 一个数表示答案. Input示例 4 2 1 2 3 2 Output示例 2 //首先,考虑区间的值的性…