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#include <bits/stdc++.h>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
unsigned long long n, a[100005], urm[100005], LIS[100005], i, j, maxim, maximu;
void Citire()
{
fin>>n;
for(i=1; i<=n; i++)
{
fin>>a[i];
}
}
void Pd()
{
LIS[n]=1;
urm[n]=0;
for(i=n-1; i>0; i--)
{
maxim=1;
for(j=i+1; j<=n; j++)
{
if(a[i]<a[j])
{
if(maxim<LIS[j]+1)
{
maxim=LIS[j]+1;
maximu=j;
}
}
}
LIS[i]=maxim;
urm[i]=maximu;
if(maxim==1)
urm[i]=0;
}
}
void Afisare()
{
maxim=0;
for(i=1; i<n; i++)
{
if(maxim<LIS[i])
{
maxim=LIS[i];
maximu=i;
}
if(maxim>=(n-i+1))
break;
}
fout<<maxim<<'\n';
while(maximu!=0)
{
fout<<a[maximu]<<' ';
maximu=urm[maximu];
}
}
int main()
{
Citire();
Pd();
Afisare();
return 0;
}