#include <cstdio>

using namespace std;
int t[100004];
int v[100004];
int main()
{freopen("scmax.in","r",stdin);
freopen("scmax.out","w",stdout);
long int n;
scanf("%ld",&n);
for(int i=1;i<=n;i++) scanf("%d",&t[i]);
v[n]=0;
int maxxx=-1,maxpoz;
for(int i=n-1;i>=1;i--)
    {
        int max=-1;
        for(int j=i+1;j<=n;j++)
            {
                if(t[j]>t[i] && v[j]>max) max=v[j];
            }
        v[i]=max+1;
        if(max+1>maxxx)
            {
                maxxx=max+1;maxpoz=i;
            }
    }
printf("%d\n",maxxx+1);
for(int i=maxpoz;maxxx>=0 && i<=n;i++)
    {
        if(v[i]==maxxx)
            {
                printf("%d ",t[i]);
                maxxx--;
            }
    }
}