#include<fstream>
#include<climits>

using namespace std;

ifstream cin("scmax.in");
ofstream  cout("scmax.out");

#define maximumLength 100001

int n, DP[maximumLength], arr[maximumLength][2],position;

void solution() {
	int i, j;
	int maxi = 1;
	DP[n] = 1;
	arr[n][1] = -1;
	position = n;
	for (i = n-1; i >= 1; i--) {
		DP[i] = 1;
		arr[i][1] = -1;
		for (j = i+1; j <= n; j++) {
			if (arr[j][0] > arr[i][0] && DP[i]<DP[j]+1) {
				DP[i] = DP[j] + 1;
				arr[i][1] = j;
				if (DP[i] > maxi) {
					maxi = DP[i];
					position = i;
				}
			}
		}
		
	}
	
	cout << maxi << '\n';
	i = position;
	while (i != -1) {
		cout << arr[i][0]<<" ";
		i = arr[i][1];
	}
}

int main() {

	int i,j;

	cin >> n;

	for (i = 1; i <= n; i++) {
		cin >> arr[i][0];
	}
	solution();
}