#include <cstdio>
#define NMAX 100005

using namespace std;

int a[NMAX], n, b[NMAX], c[NMAX];

void citire()
{
    scanf("%d", &n);
    for(int i=0;i<n;i++)
        scanf("%d ", &a[i]);
}

void generare()
{
    for(int i=n-1;i>=0;i--)
    {
        int nr=1;
        for(int j=n-1;j>=i;j--)
        {
            if(a[i]<a[j] && b[j]!=b[j-1])
                nr++;
        }

        b[i]=nr;
    }
}

void solutie()
{
    int lmax=1, nr=0, maxi=b[n-1];
    for(int i=n-1;i>=0;i--)
        if(b[i]>maxi)
        {
            maxi=b[i];
            lmax++;
            c[nr++]=a[i];
        }
    printf("%d\n", lmax);
    for(int i=nr-1;i>=0;i--)
        printf("%d ", c[i]);
    printf("%d ", a[n-1]);
}


int main()
{
    freopen("scmax.in","r",stdin);
    freopen("scmax.out","w",stdout);

    citire();
    generare();
    solutie();
    return 0;
}