#include <cstdio>

using namespace std;
FILE *f,*g;

int l[100002],pred[100002],v[100002];
int n,imax=1;

void tipar(int poz)
{
    if(poz)
    {
        tipar(pred[poz]);
        fprintf(g,"%d ",v[poz]);
    }
}
void dinamica()
{
    l[1]=1;
    for(int i=2;i<=n;++i)
    {
        l[i]=1;
        for(int j=1;j<i;++j)
            if(l[i]<l[j]+1 && v[i]>v[j])
                l[i]=l[j]+1,pred[i]=j;
        if(l[i]>l[imax])
            imax=i;
    }
}
int main()
{
    f=fopen("scmax.in","r");
    g=fopen("scmax.out","w");
    fscanf(f,"%d",&n);
    for(int i=1;i<=n;++i)
        fscanf(f,"%d",&v[i]);
    dinamica();
    fprintf(g,"%d\n",l[imax]);
    tipar(imax);
    fclose(f);
    fclose(g);
    return 0;
}