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Cod sursa(job #809137)
/*#include <fstream>
#define nmax 1000003
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
void citire();
void pd(int x);
void afisare();
int a[nmax],lgmax[nmax], urm[nmax],n;
int main()
{
citire();
pd(n-2);
afisare();
fout.close();
return 0;
}
void citire()
{
int i;
fin>>n;
for(i=0;i<n;i++)
fin>>a[i];
}
void pd( int x)
{
int i,j,max,jmax;
lgmax[n-1]=1;
urm[n-1]=-1;
for(i=n-2;i>=0;i--)
{
max=0;
for(j=i+1;j<=n-1;j++)
if(lgmax[j]>max && a[i]<a[j])
{
max=lgmax[j];
jmax=j;
}
lgmax[i]=1+max;
urm[i]=jmax;
}
}
void afisare()
{
int i,max=0,imax;
for(i=0;i<n;i++)
if(max<lgmax[i])
{
max=lgmax[i];
imax=i;
}
fout<<max<<'\n';
i=imax;
while(i!=-1)
{
fout<<a[i]<<' ';
i=urm[i];
}
/*for(i=0;i<n;i++)
{
if(urm[i]==max-1)
{
fout<<a[urm[i]]<<' ';
max--;
}
if(max==-1)
break;
}*/
//}
#include<fstream>
#define nmax 1000003
using namespace std;
ifstream fin("scmax.in");
ofstream fout("scmax.out");
void citire();
void pd();
void afisare();
int lgmax[nmax],a[nmax], maxx,sol=0,urm[nmax],p;
int n;
int main()
{
citire();
pd();
afisare();
return 0;
}
void citire()
{
int i;
fin>>n;
for(i=1;i<=n;++i)
fin>>a[i];
}
void pd()
{
int i,j;
lgmax[n]=1;
urm[n]=-1;
maxx=1; p=n;
for(i=n-1;i>=1;--i)
{
lgmax[i]=1;
urm[i]=-1;
for(j=i+1;j<=n;++j)
if(a[i]<a[j] && lgmax[i]<lgmax[j]+1)
{
lgmax[i]=lgmax[j]+1;
urm[i]=j;
if(lgmax[i]>maxx)
maxx=lgmax[i],p=i;
}
}
}
void afisare()
{
int i;
fout<<maxx<<'\n';
i=p;
while(i!=-1)
{
fout<<a[i]<<' ';
i=urm[i];
}
}