#include <bits/stdc++.h>

using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");

int n,i,j,p,lmax,ma,u,a[100001],l[100001];
int main()
{
    f>>n;
    for(i=1; i<=n; i++)
        f>>a[i];

    l[n]=1;
    p=n;
    lmax=1;

    for(i=n-1; i>=1; i--)
    {
        ma=0;
        for(j=i+1; j<=n; j++)
            if(a[i]<a[j]&&l[j]>ma)
                ma=l[j];
        l[i]=1+ma;
        if(l[i]>lmax)
        {
            lmax=l[i];
            p=i;
        }
    }

    g<<l[p]<<endl;
    g<<a[p]<<" ";
    lmax--;
    u=a[p];
    for(i=p+1; i<=n; i++)
        if(l[i]==lmax && a[i]>u)
        {
            g<<a[i]<<" ";
            u=a[i];
            lmax--;
        }
    return 0;
}