Cod sursa(job #874485)
#include <fstream>
#define nmax 100000
using namespace std;
ifstream cin("scmax.in");
ofstream cout("scmax.out");
int v[nmax],l[nmax],n,i,j,maxim,k,t;
int main()
{
cin>>n;
for(i=1;i<=n;i++)
cin>>v[i];
l[n]=1;
for(k=n-1;k>=1;k--)
{
maxim=0;
for(i=k+1;i<=n;i++)
if(v[i]>v[k] && l[i]>maxim)
maxim=l[i];
l[k]=1+maxim;
}
maxim=l[1];
t=1;
for(k=1;k<=n;k++)
if(l[k]>maxim)
{
maxim=l[k];
t=k;
}
cout<<maxim<<"\n"<<v[t]<<' ';
for(i=t+1;i<=n;i++)
if(v[i]>v[t] && l[i]==maxim-1)
{
cout<<v[i]<<' ';
maxim--;
}
return 0;
}