#include <iostream>
#include <fstream>
using namespace std;
int n,a[100001],l[100001],i,j;
int main()
{
    ifstream f("scmax.in");
    ofstream g("scmax.out");
    f>>n;
    for(i=1;i<=n;i++)
        f>>a[i];
    int Max;
    a[n]=1;
    for(i=n-1;i>0;i--)
    {
        Max=0;
        for(j=i+1;j<=n;j++)
            if(a[i]<=a[j]&&Max<l[j])Max=l[j];
        l[i]=Max+1;
    }
    Max=0;
    int k;
    for(i=1;i<=n;i++)
        if(l[i]>Max)Max=l[i],k=i;
    g<<Max<<"\n";
    for(i=k;i<=n&&Max;i++)
        if(l[i]==Max)
        {
            g<<a[i]<<" ";
            Max--;
        }
    return 0;
}