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#include <fstream>
using namespace std;
ifstream in("scmax.in");
ofstream out("scmax.out");
const int N=100000;
int v[N],l[N],c[N];
int main()
{
int n,maxim,maxi=-1,imaxi;
in>>n;
for(int i=1; i<=n; i++)
in>>v[i];
for(int i=1; i<=n; i++)
{
l[i]++;
maxim=0;
for(int j=i; j>=1; j--)
{
if(l[j]>maxim&&v[j]<v[i])
{
maxim=l[j];
}
}
l[i]+=maxim;
if(l[i]>maxi)
maxi=l[i],imaxi=i;
}
out<<maxi<<"\n";
int k=1;
c[1]=v[imaxi];
for(int i=n; i>=1; i--)
if(l[i]==maxi-1&&v[i]<v[imaxi])
maxi=l[i],imaxi=i,c[++k]=v[imaxi];
for(int i=k; i>=1; i--)
out<<c[i]<<" ";
/*for(int i=1;i<=n;i++)
out<<l[i]<<" ";*/
return 0;
}