#include<iostream>
using namespace std;

int main()
{
	long long n;
	long long L[1001], a[1001], truoc[1001], ketqua[1001], ans;

	cin >> n;
	for (int i = 1; i <= n; i++)
		cin >> a[i];

	L[0] = 0;
	a[0] = -100000000;

	for (int i = 1; i <= n; i++)
	{
		int j = 0;
		for (int k = 0; k <= i - 1; k++)
		{
			if (a[k] <= a[i] && L[k] > L[j])
			{
				j = k;
			}
		}
		L[i] = L[j] + 1;
		truoc[i] = j;
	}

	ans = 1;
	for (int i = 2; i <= n; i++)
		if (L[i] > L[ans])
		{
			ans = i;
		}
//	for (int i = 1; i <= n; i++)
//		{
//			cout << L[i] << " ";
//			cout << endl;
//		}
	cout << L[ans] << endl;
	long long dem = 0;
	while (truoc[ans] > 0)
	{
		dem++;
		ketqua[dem] = a[ans];
		ans = truoc[ans];
	}

//	for (int i = 1; i <= n; i++)
//	{
//		cout << truoc[i] << " ";
//		cout << endl;
//	}

	dem++;
	ketqua[dem] = ans;
	for (int i = dem; i >= 1; i--)
		cout << ketqua[i] << " ";


}