#include<bits/stdc++.h>
using namespace std;
int l[1000005];

int main()
{
	int n, k;
	cin >> n >> k;
	for (int i = 1; i <= n; i++)
	{
		cin >> l[i];
	}
	
	for (int i = 1; i <= n - k + 1; i++)
	{
		long long minn = 10000000000;
		for (int j = i; j <= i + k - 1; j++)
		{
			if (l[j] < minn)
			{
				minn = l[j];
			}
		}
		cout << minn << " ";
	}
	cout << "\n";
	for (int i = 1; i <= n - k + 1; i++)
	{
		long long maxn = -10000000000;
		for (int j = i; j <= i + k - 1; j++)
		{
			if (l[j] > maxn)
			{
				maxn = l[j];
			}
		}
		cout << maxn << " ";
	}
}