#include<fstream>
#include<iostream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
unsigned int n,v[100001],c[100001],d[100001],max1=0;
void citire()
{
    fin>>n;
    for(int a=1;a<=n;a++)
    {
        fin>>v[a];
    }
}
void fct()
{
    for(int a1=n;a1>=1;a1--)
    {
        c[a1]=1;
        for(int a2=a1+1;a2<=n;a2++)
        {
            if(v[a1]<=v[a2] and c[a1]<c[a2]+1)
            {
                c[a1]=c[a2]+1;
                d[a1]=a2;
                if(c[a1]>c[max1])
                {
                    max1=a1;
                }
            }
        }
    }
}
int main()
{
    citire();
    max1=n;
    fct();
    fout<<c[max1]<<'\n';
    while(max1)
    {
        fout<<v[max1]<<" ";
        max1=d[max1];
    }
}