#include <iostream>
#include <fstream>

using namespace std;

#define DIM 1000000
int a[DIM], prev[DIM], len[DIM];
ifstream f("scmax.in");
ofstream g("scmax.out");

void print(int pos)
{
    if (! pos)
        return;
    
    if (pos != prev[pos])
        print(prev[pos]);
    g << a[pos] << " ";
}

int main()
{
        int n, i, j, max, pos;
        
        f >> n;
        for (i = 0; i < n; i++)
            f >> a[i];
        
        len[0] = 1;
        prev[0] = 0;
        for (i = 1; i < n; i++) {
            max = 0;
            pos = i;
            for (j = i - 1; j >= 0; j--) {
                if (a[j] < a[i] && a[j] > max) {
                    max = a[j];
                    pos = j;
                }
            }
            len[i] = 1 + len[pos];
            prev[i] = pos;
        }
        
        max = 0;
        for (i = 0; i < n; i++)
            if (len[i] > len[max]) {
                max = len[i];
                pos = i;
            }
        
        g << max << endl;
        print(pos);

        f.close();
        g.close();
}