1306. Sequence Median Time limit: 1.0 secondMemory limit: 1 MBLanguage limit: C, C++, Pascal Given a sequence of N nonnegative integers. Let's define the median of such sequence. If N is odd the median is the element with stands in the middle of the…

题意:求一串数字里的中位数.内存为1M.每个数范围是0到2的31次方-1. 思路:很容易想到把数字全部读入,然后排序,但是会超内存.用计数排序但是数又太大.由于我们只需要第n/2.n/2+1大(n为偶数)或第(n+1)/2大(n为奇数).所以可以用优先队列来维护最值,这样只需要存一半元素(n/2+1个元素)就可以了. #include<cstdio> #include<algorithm> #include<queue> #define UL unsigned int…

[题意]给出n(1~250000)个数(int以内),求中位数 [题解]一开始直接sort,发现MLE,才发现内存限制1024k,那么就不能开int[250000]的数组了(4*250000=1,000,000大约就是1M内存). 后来发现可以使用长度为n/2+1的优先队列,即包含前一半的数以及中位数,其他数在读入的时候就剔除,这样可以省一半的空间. #include<bits/stdc++.h> #define eps 1e-9 #define FOR(i,j,k) for(int i=j;…

1306 URAL真是没水题 以为简单的排序就好了 ME  内存限制很紧 堆排序 或者 STL 用堆排序做的 正好复习一下 都忘了 #include <iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<stdlib.h> using namespace std; #define N 1250010 int a[N]; void adjust(int…

I - Sequence Median Time Limit:1000MS     Memory Limit:1024KB     64bit IO Format:%I64d & %I64u Submit Status Description Given a sequence of N nonnegative integers. Let's define the median of such sequence. If N is odd the median is the element with…

目录 Ural 1248 Sequence Sum 题解 题意 题解 程序 Ural 1248 Sequence Sum 题解 题意 给定\(n\)个用科学计数法表示的实数\((10^{-100}\sim10^{100})\),输出它们的和. Tip: 一个实数可以用科学计数法表示为\(x\times10^y\),其中\(1\le x<10\) \(x\)为实数,\(y\)是整数.输入时表示为\(xey\).保证输入的实数有\(19\)位有效数字.输出时用科学计数法,必须包括\(19\)位正确数…

http://acm.csu.edu.cn/OnlineJudge/problem.php?id=1306 1306: Manor Time Limit: 1 Sec  Memory Limit: 128 MB Submit: 125  Solved: 35 [Submit][Status][Web Board] Description Bob有n个正整数,他将这n个整数根据大小划分成两部分.对于小于等于k的整数放在集合A中,其余的放在集合B中.每次他从集合B中取出一个最大的值,将其变成0放入A…

Problem Description Steph is extremely obsessed with “sequence problems” that are usually seen on magazines: Given the sequence 11, 23, 30, 35, what is the next number? Steph always finds them too easy for such a genius like himself until one day Kla…

Problem Description There's a queue obeying the first in first out rule. Each time you can either push a number into the queue (+i), or pop a number out from the queue (-i). After a series of operation, you get a sequence (e.g. +1 -1 +2 +4 -2 -4). We…

Description Given a sequence of N nonnegative integers. Let's define the median of such sequence. If N is odd the median is the element with stands in the middle of the sequence after it is sorted. One may notice that in this case the median has posi…