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Cod sursa(job #539876)
#include<fstream>
using namespace std;
int a[100001],b[100001];
int main()
{
ifstream fi("scmax.in");
ofstream fo("scmax.out");
int n,poz,max,i,j,maxb=0,pozb=0;
fi>>n;
for(i=0; i<n; i++)
fi>>a[i];
b[n-1]=1;
for(i=n-2; i>=0; i--)
{
max=0;
for(j=i+1; j<n; j++)
{
if(max<b[j] && a[j]>a[i])
{
max=b[j];
poz=j;
}
}
if(max==0)
b[i]=1;
else
b[i]=b[poz]+1;
if(maxb<b[i])
{
maxb=b[i];
pozb=i;
}
}
fo<<maxb<<'\n';
int prec=a[pozb];
fo<<a[pozb]<<" ";
for(i=pozb+1; i<n; i++)
{
if(b[i]==maxb-1 && prec<a[i])
{
maxb--;
fo<<a[i]<<" ";
prec=a[i];
}
}
fi.close();
fo.close();
return 0;
}