#include <iostream>
#include<fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n, k,vmax ,a, v[100001], x[100001], pos[100001];
int main()
{
    fin>>n;
    for(int i=1;i<=n;i++) fin>>v[i];
    x[n]=1;
    k=n;
    pos[n]=n+1;

    for(int i=n-1;i;i--)
    {   int xmax=0;
        a=i;
        for(int j=i+1;j<=n;j++)
            if(v[j]>v[i] && xmax<x[j]) {xmax=x[j];a=j;}
        x[i]=1+xmax;
        pos[i]=a;
        if(x[k]<x[i]) k=i;
    }

  fout<<x[k]<<'\n';
    int j=k;
    while(pos[j]!=0)
    { fout<<v[j]<<" ";
      j=pos[j];
    }

fout.close();
    return 0;
}