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#include <fstream>
#define DMAX 100001
using namespace std;
ifstream fin ("scmax.in");
ofstream fout ("scmax.out");
int a[DMAX], lg[DMAX], urm[DMAX];
int n;
void citire();
void lis();
void afisare();
int main()
{
citire();
lis();
afisare();
return 0;
}
void citire()
{
int i;
fin>>n;
for (i=1; i<=n; i++)
fin>>a[i];
}
void lis()
{
int i, j, maxim, pozmax;
lg[n]=1;
urm[n]=0;
for(i=n-1; i>=1; i--)
{
maxim=1;
pozmax=0;
for(j=i+1; j<=n; j++)
if(a[i]<a[j])
{
maxim=lg[j]+1;
pozmax=j;
}
lg[i]=maxim;
urm[i]=pozmax;
}
}
void afisare()
{
int i, j, maxim, pozmax;
maxim=lg[1];
pozmax=1;
for(i=2; i<=n; i++)
if(lg[i]>maxim)
{
maxim=lg[i];
pozmax=i;
}
fout<<maxim<<'\n';
for(i=pozmax; i!=0; i=urm[i])
fout<<a[i]<<' ';
fout<<'\n';
}