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Cod sursa(job #863006)
#include<fstream>
#include<vector>
#include<algorithm>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int n,i,poz,a[100001];
vector<int>v,p,q;
void pune(int x)
{
if(q.size()==0||q[q.size()-1]<x)
{
q.push_back(x);
p.push_back(q.size()-1);
}
else
{
int mij,li=0,ls=q.size()-1,sol=q.size()-1;
while(li<=ls)
{
mij=(li+ls)>>1;
if(q[mij]>=x)
{
ls=mij-1;
sol=mij;
}
else
li=mij+1;
}
q[sol]=x;
p.push_back(sol);
}
}
int main()
{
f>>n;
for(i=1;i<=n;++i)
{
f>>a[i];
pune(a[i]);
}
poz=q.size();
g<<poz<<'\n';
--poz;
for(i=p.size()-1;i>=0;--i)
{
if(p[i]==poz)
{
v.push_back(a[i+1]);
--poz;
if(poz<0)
break;
}
}
reverse(v.begin(),v.end());
for(i=0;i<v.size();++i)
g<<v[i]<<' ';
return 0;
}