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#include <fstream>
#define NMAX 100002
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int n,i,j;
int a[NMAX],lgmax[NMAX],urm[NMAX];
int main()
{
fin>>n;
for(i=1; i<=n; i++)
fin>>a[i];
///initializare
lgmax[n]=1; urm[n]=0;
for(i=n-1; i>0; i--)
{
lgmax[i]=1; urm[i]=0;
for(j=i+1; j<=n; j++)
if (a[i]<a[j] && lgmax[i]<1+lgmax[j])
{
lgmax[i]=lgmax[j]+1;
urm[i]=j;
}
}
///lungimea maxima
int maxim,pozmax;
maxim=lgmax[1];
pozmax=1;
for(i=2; i<=n; i++)
if (maxim<lgmax[i])
{
maxim=lgmax[i];
pozmax=i;
}
fout<<maxim<<'\n';
///afisez subsirul crescator de lgmax
i=pozmax;
while(i)
{
fout<<a[i]<<' ';
i=urm[i];
}
fout<<'\n';
fout.close();
return 0;
}