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…

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…

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;…

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…

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…

Description Given m sequences, each contains n non-negative integer. Now we may select one number from each sequence to form a sequence with m integers. It's clear that we may get n ^ m this kind of sequences. Then we can calculate the sum of numbers…

给出n个数,n<=250000,求这n个数的中位数,内存限制1mb 卡内存的神题,用数组存下来刚好1mb,再加上执行时消耗内存.立即爆. 因此我们用优先队列存储一半的数. 网上的某些代码,用priority_queue全爆内存. 我存的125000长度的数组.加上STL的make_heap() #include<cstdio> #include<queue> using namespace std; int a[125010]; int main() { int n,x; d…

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1029 Median(25 分) Given an increasing sequence S of N integers, the median is the number at the middle position. For example, the median of S1 = { 11, 12, 13, 14 } is 12, and the median of S2 = { 9, 10, 15, 16, 17 } is 15. The median of two sequences…