Running Median

Time Limit: 1 Sec  Memory Limit: 256 MB

题目连接

　　http://acm.hdu.edu.cn/showproblem.php?pid=3282

Description

For this problem, you will write a program that reads in a sequence of 32-bit signed integers. After each
odd-indexed value is read, output the median (middle value) of the elements received so far.

Input

The first line of input contains a single integer P, (1 ≤ P ≤ 1000), which is the number of data sets that follow. The first line of each data set contains the data set number, followed by a space, followed by an odd decimal integer M, (1 ≤ M ≤ 9999), giving the total number of signed integers to be processed.
The remaining line(s) in the dataset consists of the values, 10 per line, separated by a single space.
The last line in the dataset may contain less than 10 values.

Output

For each data set the first line of output contains the data set number, a single space and the number of medians output (which should be one-half the number of input values plus one). The output medians will be on the following lines, 10 per line separated by a single space. The last line may have less than 10 elements, but at least 1 element. There should be no blank lines in the output.

Sample Input

3
1 9
1 2 3 4 5 6 7 8 9
2 9
9 8 7 6 5 4 3 2 1
3 23
23 41 13 22 -3 24 -31 -11 -8 -7
3 5 103 211 -311 -45 -67 -73 -81 -99
-33 24 56

Sample Output

1 5 1 2 3 4 5 2 5 9 8 7 6 5 3 12 23 23 22 22 13 3 5 5 3 -3 -7 -3

HINT

题意

  给你n个数，每次插入一个数，当插入数的数量为奇数的时候，我们就输出中位数

题解：

这道题要求动态求中位数，但是数据范围太小了，于是我们直接暴力搞就好了

事先排序，然后每次都扫一遍就行了……

代码：

//qscqesze
#include <cstdio>
#include <cmath>
#include <cstring>
#include <ctime>
#include <iostream>
#include <algorithm>
#include <set>
#include <vector>
#include <sstream>
#include <queue>
#include <typeinfo>
#include <fstream>
#include <map>
typedef long long ll;
using namespace std;
//freopen("D.in","r",stdin);
//freopen("D.out","w",stdout);
#define sspeed ios_base::sync_with_stdio(0);cin.tie(0)
#define maxn 100005
#define mod 10007
#define eps 1e-9
//const int inf=0x7fffffff;   //无限大
const int inf=0x3f3f3f3f;
/*

*/
//**************************************************************************************
inline ll read()
{
    int x=0,f=1;char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
    return x*f;
}
struct node
{
    int x,y;
};
node a[maxn];
bool cmp(node b,node c)
{
    return b.x<c.x;
}
int main()
{
    int t=read();
    for(int cas=1;cas<=t;cas++)
    {
        vector<int> ans;
        int n=read(),m=read();
        for(int i=0;i<m;i++)
            a[i].x=read(),a[i].y=i+1;
        sort(a,a+m,cmp);
        for(int i=0;i<m;i+=2)
        {
            int flag=0;
            for(int j=0;j<m;j++)
            {
                if(a[j].y<=i+1)
                    flag++;
                if(flag==(i+2)/2)
                {
                    ans.push_back(a[j].x);
                    break;
                }
            }
        }
        printf("%d %d",cas,ans.size());
        for(int i=0;i<ans.size();i++)
        {
            if((i)%10==0)
                printf("\n");
            if(i%10==0)
                printf("%d",ans[i]);
            else
                printf(" %d",ans[i]);

        }
        printf("\n");

    }
}