#include <fstream>

using namespace std;
int n,lmax,i,Max,ult,j,a[100005],l[100005],p;
ifstream f("scmax.in");
ofstream g("scmax.out");
int main()
{f>>n;
for(i=1;i<=n;i++)
{
    f>>a[i];
}
l[n]=1;
lmax=0;
for (i=n-1;i>=1;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;
        if(lmax<l[i])
        {
            lmax=l[i];
            p=i;
        }
}
g<<lmax<<'\n';
ult=a[p]-1;
for(i=p;i<=n;i++)
    if(a[i]>ult && l[i]==lmax)
{
    g<<a[i]<<" ";
    ult=a[i];
    lmax--;
}
    return 0;
}