#include <bits/stdc++.h>
using namespace std;
ifstream in("scmax.in");
ofstream out("scmax.out");
int n, a[100010], best[100010], prec[100010];
int maxim;
int main()
{
     in >> n;
     for(int i=1; i<=n; i++)
          in >> a[i];

          best[n] = 1;
          prec[n] = -1;
          maxim = 1;
          int p =n;
     for(int i=n-1; i>=1; i--)
         {
            best[i] = 1;
            prec[i]=-1;
            for(int j=i+1; j<=n; j++)
            {
                 if( a[i] <= a[j] && best[j]+1 > best[i])
                 {
                     best[i] = best[j] + 1;
                     if( best[i] >= maxim ) maxim = best[i], p=i;
                     prec[i]=j;
                 }

            }
         }
         out << maxim <<'\n';
    int i= p;
    while( i!=-1 )
    {
         out << a[i] << ' ';
         i = prec[i];
    }

return 0;
}