#include <cstdio>
#define dmax 100010

using namespace std;
FILE * fin=fopen("scmax.in","r");
FILE * fout=fopen("scmax.out", "w");
//ifstream fin("scmax.in");
//ofstream fout("scmax.out");

int n;
int a[dmax];
int lg[dmax];
int urm[dmax];

void citire();
void rez();

int main()
{
    citire();
    rez();
    return 0;
}

void citire()
{
    int i;
    fscanf(fin, "%d", &n);
    for (i=1; i<=n; i++)
        fscanf(fin, "%d", &a[i]);
}

void rez()
{
    int i, j, pozmax;
    int maxim;
    lg[n]=1;
    urm[n]=0;
    for (i=n-1; i>=1; i--)
    {
        maxim=1;
        pozmax=0;
        for (j=i+1; j<=n; j++)
        {
            if (a[j]>=a[i])
                if (lg[j]+1>maxim)
                {
                    maxim=lg[j]+1;
                    pozmax=j;
                }
        }
        lg[i]=maxim;
        urm[i]=pozmax;
    }
    ///caut maximul
    maxim=0;
    for (i=1; i<=n; i++)
        if (lg[i]>maxim)
        {
            maxim=lg[i];
            pozmax=i;
        }
    fprintf(fout, "%d\n", maxim);
    for (i=pozmax; i!=0; i=urm[i])
        fprintf(fout, "%d ", a[i]);
}