//horatiu11
# include <cstdio>
# define nmax 100001
using namespace std;
int n,a[nmax],L[nmax],poz[nmax],pozm;
int main()
{
    int i,j;
    freopen("scm.in","r",stdin);
    freopen("scm.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n;++i)
        scanf("%d",&a[i]);
    L[n]=1;poz[n]=-1;pozm=n;
    for(i=n-1;i>=1;--i)
    {
        L[i]=1;poz[i]=-1;
        for(j=i+1;j<=n;++j)
            if(a[i]<a[j] && L[i]<L[j]+1)
            {
                L[i]=L[j]+1;poz[i]=j;
            }
        if(L[i]>L[pozm])pozm=i;
    }
    printf("%d\n",L[pozm]);
    i=pozm;
    while(i!=-1)
    {
        printf("%d ",a[i]);
        i=poz[i];
    }
    printf("\n");
    return 0;
}