#include <iostream>
#include <random>
#include <fstream>
#include <stack>

using namespace std;

ifstream fin("scmax.in");
ofstream fout("scmax.out");

int a[100005], dp[100005], urm[100005];
int main() 
{
    int n;
    fin >> n;
    for (int i = 1; i <= n; i++)
        fin >> a[i];
    dp[n] = 1;
    urm[n] = n + 1;
    for (int i = n - 1; i >= 1; i--)
    {
        dp[i] = 1;
        int maxx = 0, pos = n + 1;
        for (int j = i + 1; j <= n; j++)
            if (a[i]<a[j] && dp[j]>maxx)
                maxx = dp[j], pos = j;
        dp[i]+=maxx;
        urm[i] = pos;
    }
    int max1 = 0;
    int start;
    for (int i = 1; i <= n; i++)
        if (dp[i] > max1)
            max1 = dp[i], start = i;
    fout << max1 << "\n";
    while (start != n + 1)
    {
        fout << a[start] << " ";
        start = urm[start];
    }
    return 0;
}