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Cod sursa(job #831806)
#include<iostream>
#include<fstream>
#define N 100005
#include<queue>
struct sol{int pozitie;int val;};
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
int x[N],Nr[N],Next[N],n,vf;
sol LIS[N];
void Inserare(sol x)
{
vf++;
int i;
i=vf;
while(LIS[i-1].val>x.val && i>1)
{
LIS[i]=LIS[i-1];
i--;
}
LIS[i]=x;
}
int main()
{
int i,poz,maxim,j,L;
sol v;
vf=0;
fin>>n;
for(i=1;i<=n;i++)
fin>>x[i];
fin.close();
v.val=1;
v.pozitie=n;
Inserare(v);
L=0;
for(i=n-1;i>=1;i--)
{
maxim=0;
j=vf;
while(j>0)
{
if(x[LIS[j].pozitie]>x[i])
break;
j--;
}
v.pozitie=i;
v.val=LIS[j].val+1;
L=v.val>L?v.val:L;
Next[i]=LIS[j].pozitie;
Inserare(v);
}
fout<<L<<"\n";
for(i=1;i<=n;i++)
if(LIS[i].val==L)
{
j=LIS[i].pozitie;
while(Next[j]!=0)
{
fout<<x[j]<<" ";
j=Next[j];
}
fout<<x[j]<<" ";
fout<<"\n";
break;
}
return 0;
}