#include <iostream>
#include <cstdio>

#define NMax 100005

using namespace std;

int v[NMax], N, best[NMax], poz[NMax], p;

void Read()
{
    scanf("%d", &N);

    for(int i=1; i<=N; ++i)
        scanf("%d", &v[i]);
}

int maxi;

void SCMAX()
{
    best[N]=1;
    poz[N]=-1;
    maxi=1;
    p=N;
    for(int i=N-1; i>=1; --i)
    {
        best[i]=1;
        poz[i]=-1;
        for(int j=i+1; j<=N; ++j)
        {
            if(v[i]<v[j] && best[i]< best[j]+1)
            {
                best[i]=best[j]+1;
                poz[i]=j;
                if(best[i]>maxi)
                    maxi=best[i], p=i;
                break;
            }
        }
    }
}

void Print()
{
    int i=p;
    cout<<maxi<<"\n";
    while(i!=-1)
    {
        cout<<v[i]<<" ";
        i=poz[i];
    }
}

int main()
{
    freopen("scmax.in", "r", stdin);
    freopen("scmax.out", "w", stdout);

    Read();
    SCMAX();
    Print();

    return 0;
}