#include <fstream>
#define nmax 1000003
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");

void citire();
void pd(int x);
void afisare();

int a[nmax],lgmax[nmax], urm[nmax],n;

int main()
{
    citire();
    pd(n-2);
    afisare();

    fout.close();
    return 0;
}


void citire()
{
    int i;
    fin>>n;
    for(i=0;i<n;i++)
        fin>>a[i];
}

void pd( int x)
{
    int i,j,max,jmax;
    lgmax[n-1]=1;
    urm[n-1]=-1;
    for(i=n-2;i>=0;i--)
        {
            max=0;
            for(j=i+1;j<=n-1;j++)
                if(lgmax[j]>max && a[i]<a[j])
                    {
                        max=lgmax[j];
                        jmax=j;
                    }
            lgmax[i]=1+max;
            urm[i]=jmax;
        }

}

void afisare()
{
    int i,max=0,imax;
    for(i=0;i<n;i++)
        if(max<lgmax[i])
            {
                max=lgmax[i];
                imax=i;
            }
    fout<<max<<'\n';
    i=imax;
    while(i!=-1)
    {
    fout<<a[i]<<' ';
    i=urm[i];
    }
    /*for(i=0;i<n;i++)
    {
        if(urm[i]==max-1)
        {
            fout<<a[urm[i]]<<' ';
            max--;
        }
        if(max==-1)
            break;
    }*/
}


/*//#include<stdio.h>
#include<fstream>
#define nmax
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");

//FILE*f=fopen("scmax.in","r");
//FILE*g=fopen("scmax.out","w");
int best[100003],a[100003], max,sol=0,poz[100003],p;
int n;
void read()
{
fscanf(f,"%d",&n);
for(int i=1;i<=n;++i) fscanf(f,"%d",&a[i]);
}
void dinamic()
{
int i,j;
best[n]=1;
poz[n]=-1;
max=1; p=n;
for(i=n-1;i>=1;--i)
{
best[i]=1;
poz[i]=-1;
for(j=i+1;j<=n;++j)
if(a[i]<a[j] && best[i]<best[j]+1)
{
best[i]=best[j]+1;
poz[i]=j;
if(best[i]>max) max=best[i],p=i;
}
}
}
void constr()
{
int i;
i=p;
while(i!=-1)
{
fprintf(g,"%d ",a[i]);
i=poz[i];
}
}
int main()
{
read();
dinamic();
fprintf(g,"%d\n",max);
constr();
return 0;
}*/