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Cod sursa(job #711464)
#include <iostream>
#include <fstream>
using namespace std;
ifstream in ("scmax.in");
ofstream out("scmax.out");
int const N=100000;
int n,v[N],x[N],pred[N],maxi;
void citeste ()
{
in>>n;
for(int i=1;i<=n;i++)
in>>v[i];
}
/*void constr ()
{
for(int i=n;i>0;i--)
{
lung[i]=1;
for(int j=i;j<=n;j++)
{
if((v[i]<v[j])&&(lung[i]<=lung[j]))
{
lung[i]=lung[j]+1;
if(lung[i]>maxi)
{
maxi=lung[i];
start=i;
}
urm[i]=j;
}
}
}
}*/
/*void refac ()
{
int j=start;
for(int i=1;i<=maxi;i++)
{
out<<v[j]<<" ";
j=urm[j];
}
}*/
int cautb (int a)
{
int i=0,pas=1;
for(pas<<=16;pas>0;pas>>=1)
if((i+pas<=maxi)&&(v[x[i+pas]]<a))
i+=pas;
return i;
}
void constr ()
{
x[++maxi] = 1;
for(int i=2;i<=n;i++)
{
int j=cautb(v[i]);
x[j+1]=i;
pred[i]=x[j];
if(j==maxi)
maxi++;
}
}
void refac (int temp)
{
if(temp==0)
return;
refac(pred[temp]);
out<<v[temp]<<" ";
}
int main()
{
citeste();
constr();
out<<maxi<<"\n";
refac(x[maxi]);
return 0;
}