Main/C++/2017/S2.cpp


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#include <bits/stdc++.h>
using namespace std;

int main()
{
    int N, input;
    cin >> N;
    vector<int> data;
    for (int i = 0; i < N; i++)
    {
        cin >> input;
        data.push_back(input);
    }
    sort(data.begin(), data.end());
    vector<int> high, low;
    for (int i = 0; i < ceil(N/2.0); i++)
    {
        low.push_back(data[i]);
    }
    reverse(low.begin(),low.end());
    for (int i = ceil(N/2.0); i < N; i++)
    {
        high.push_back(data[i]);
    }
    vector <int> output;
    for (int i = 0; i < N; i ++)
    {
        if (i % 2 == 0)
        {
            output.push_back(low[i/2]);
        }
        else
        {
            output.push_back(high[(i-1)/2]);
        }
    }
    for (int i = 0; i < N; i++)
    {
        cout << output[i] << ' ';
    }

    return 0;


}