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Cod sursa(job #809185)
#include <fstream>
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
void citire();
void pd();
void afisare();
int n,lg[100001],lgmaxim[100001],urm[100001],maxim,poz;
int main()
{
citire();
pd();
afisare();
return 0;
}
void citire()
{
int i;
fin>>n;
for(i=1;i<=n;i++)
fin>>lg[i];
}
void afisare()
{
int i;
maxim=lgmaxim[1];
poz=1;
for(i=2;i<=n;i++)
if(maxim<lgmaxim[i])
{
maxim=lgmaxim[i];
poz=i;
}
fout<<maxim<<'\n';
i=poz;
while(i!=-1)
{
fout<<lg[i]<<' ';
i=urm[i];
}
}
void pd()
{
int i,j;
lgmaxim[n]=1;urm[n]=-1;
for(i=n-1;i>=1;i--)
{
lgmaxim[i]=1; urm[i]=-1;
for(j=i+1;j<=n;j++)
if(lg[i]<lg[j])
if(lgmaxim[i]<1+lgmaxim[j])
{
lgmaxim[i]=1+lgmaxim[j];
urm[i]=j;
}
}
}