#include <stdio.h>

using namespace std;

int l[100005],v[100005];

int main()
{
    FILE *in,*out;
    in=fopen("scmax.in","r");
    out=fopen("scmax.out","w");
    int n,i,j;
    fscanf(in,"%d",&n);
    for(i=0;i<n;i++)
        fscanf(in,"%d",&v[i]);
    int max=0;
    for (i=n-1;i>=0;i--)
    {
        max=0;
        for (j=i+1;j<n;j++)
        {
            if (v[i]<v[j])
                if(l[j]>max)
                    max=l[j];
        }
        l[i]=max+1;
    }
    max=-1;
    int poz,val;
    for (i=0;i<n;i++)
        if(max<l[i])
        {
            max=l[i];
            val=v[i];
            poz=i;
        }
    fprintf(out,"%d",max);
    fprintf(out,"\n%d ",val);
    for (i=poz+1;i<n;i++)
    {
        if (val<v[i]&&max>0)
        {
            max--;
            val=v[i];
            fprintf(out,"%d ",v[i]);
        }

    }
    return 0;
}