#include <iostream>
#include <fstream>
#include <vector>

std::ifstream in("scmax.in");
std::ofstream out("scmax.out");

const int N=100001;
int v[N];

std::pair<int, int> scmax(int n)
{
    std::vector<int> lis(n+1, 0);
    int l=1, index=1;

    lis[1]=v[1];

    for(int i=2; i<=n; i++)
    {
        if(v[i]<lis[1])
        {
            lis[1]=v[i];
        }
        else
        {
            if(v[i]>lis[l])
            {
                lis[++l]=v[i];
                index=i;
            }
            else
            {
                {
                    int st=0, dr=l;
                    while(st+1!=dr)
                    {
                        int m=(st+dr)/2;
                        if(lis[m]<v[i])
                        {
                            st=m;
                        }
                        else
                        {
                            dr=m;
                        }
                    }
                    lis[st+1]=v[i];
                }
            }
        }
    }
    return {l, index};
}

int main()
{
    int n;

    in>>n;
    for(int i=1; i<=n; i++)
    {
        in>>v[i];
    }

    out<<scmax(n).first;
}