#include <bits/stdc++.h>

using namespace std;

int a[1000];

int main()
{
    freopen ("add.in", "r", stdin);
    freopen ("add.out", "w", stdout);

    int n, m, br;

    cin >> n >> m;

    for (int i = 0; i < n; i ++)
    {
        cin >> a[i];
    }

    br = 0;

    for (int i = 0; i < n; i ++)
    {
        for (int j = i + 1; j < n; j ++)
        {
            if (a[i] > a[j])
                br ++;
        }
    }

    if (br > m || br + n < m)
    {
        cout << "Impossible" << endl;
    }
    else
    {
        for (int i = 0; i < n - (m - br); i ++)
        {
            cout << a[i] << " ";
        }

        cout << n + 1;

        for (int i = n - (m - br); i < n; i ++)
        {
            cout << " " << a[i];
        }

        cout << endl;
    }

    fclose(stdout);

    return 0;
}