#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,maxx=0,v[10001],a[10001],k[10001];
int main()
{
    int i;
    fin>>n;
    for(i=1;i<=n;i++)
        fin>>a[i];
    v[1]=1;
    for(i=2;i<=n;i++)
    {
        int j=i-1;
        while(a[i]<=a[j] && j>0)j--;
            v[i]=v[j]+1;
        k[v[i]]=a[i];
        if(v[i]>maxx)
            maxx=v[i];
    }
    fout<<maxx<<'\n';
    for(i=1;i<=maxx;i++)
        fout<<k[i]<<" ";

    return 0;
}