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Cod sursa(job #788145)
#include<fstream>
using namespace std;
ifstream f("scmax.in");
ofstream g("scmax.out");
int a[100001],x[100001],i,n,st,dr,s,mij,t[1001];
void afis(int m)
{
if(m)
{
afis(t[m]);
g<<a[m]<<" ";
}
}
int main()
{
f>>n;
for(i=1;i<=n;i++)
f>>a[i];
x[1]=1;
s=1;
for(i=2;i<=n;i++)
{
st=1;
dr=s;
while(st<=dr)
{
mij=(st+dr)/2;
if(a[i]>a[x[mij]])
st=mij+1;
else
dr=mij-1;
}
if(st>s)
s++;
x[st]=i;
t[i]=x[st-1];
}
g<<s<<"\n";
afis(x[s]);
return 0;
}