#include<iostream>   
#include<fstream>   
using namespace std;   
main ()   
{long i, j,a[10000],l[10000],poz[10000],n;   
ifstream g("scmax.in");   
g>>n;   
for(i=1;i<=n;i++)   
g>>a[i];   
g.close();   
l[n]=1;   
poz[n]=-1;   
  for(i=n-1;i>0;i--)   
    for(l[i]=1, poz[i]=-1, j=i+1; j<=n; j++)   
  
if(a[i]<=a[j] && l[i]<1+l[j])   
    
 {    
              l[i]=1+l[j]; poz[i]=j;}   
                 
                 
                 
    ofstream fout("scmax.out");             
    int max=0,pozmax=1;   
    for (i=1;i<=n;i++)   
    if(max<l[i])   
    {max=l[i]; pozmax=i;}   
       
       
    fout<<max<<endl;   
        
     for(i=pozmax;i!=-1;i=poz[i])   
     fout<<a[i]<<" ";   
     fout.close();   
     }