#include<cstdio>
using namespace std;
int l[100001],v[100001],ma,i,k,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;
    for(i=n-1;i>=1;i--)
    {
        ma=0;
        for(j=i+1;j<=n;j++)
            if(v[i]<v[j]&&l[j]>ma)
                ma=l[j];
        l[i]=ma+1;
    }
    ma=0;
    for(i=1;i<=n;i++)
        if(l[i]>ma)
        {
            ma=l[i];
            k=i;
        }
    printf("%d\n",ma);
    printf("%d ",v[k]);
    ma--;
    for(i=k+1;i<=n;i++)
        if(v[k]<v[i]&&l[i]==ma)
        {
            printf("%d ",v[i]);
            ma--;
        }
    return 0;
}