poj 3784 Running Median

Running Median

Time Limit: 1000MS		Memory Limit: 65536K
Total Submissions: 742		Accepted: 354

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

#include<iostream>
#include<algorithm>
using namespace std;
int nums[10001];
int main()
{
    int i, j;
    int p, m;
    int cases;
    int pos;
//    freopen("e:\\data.txt", "r", stdin);
//    freopen("e:\\out.txt", "w", stdout);

    cin>>p;
    while(p--)
    {
        cin>>cases;
        cin>>m;
        pos = 1;
        cout<<cases<<" "<<(m + 1) / 2<<endl;
        cin>>nums[pos];
        cout<<nums[pos];
        j = 1, i = 1;
        while(pos < m)
        {
            pos++;
            cin>>nums[pos];
            pos++;
            cin>>nums[pos];
            j++;
            nth_element(nums+1, nums+j, nums+pos+1);
            if(i >= 10)
            {
                cout<<endl;
                i = 1;
            }
            else
            {
                cout<<" ";
                i++;
            }
            cout<<nums[j];
        }
        if(p > 0)
            cout<<endl;
    }
    return 0;
}