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