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#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,i,maxi,l[100001],a[100001],j,poz;
int main()
{
fin>>n;
for(i=1;i<=n;i++)
fin>>a[i];
l[n]=1;
for(i=n-1;i>=1;i--)
{
maxi=0;
for(j=i+1;j<=n;j++)
if((l[j]>maxi)&&(a[j]>a[i]))
maxi=l[j];
l[i]=1+maxi;
}
maxi=0;
for(i=1;i<=n;i++)
if(l[i]>maxi)
{
maxi=l[i];
poz=i;
}
fout<<maxi<<'\n';
fout<<a[poz]<<" ";
for(i=poz+1;i<=n;i++)
if(a[i]>=a[poz]&&l[i]==l[poz]-1)
{
fout<<a[i]<<" ";
poz=i;
}
fout.close();
return 0;
}