#include <bits/stdc++.h>

using namespace std;

const int mxn = 100 * 1000 + 10;

int sir[ mxn ];
int varf[ mxn ];

int n;

int cautare(int st, int sf, int val){
    int mid;
    while(sf - st > 1){
        mid = (st + sf) / 2;
        if(varf[ mid ] >= val)
            sf = mid;
        else
            st = mid;
    }
    return st;
}

int solve(){
    int lungime = 1;
    varf[ 1 ] = sir[ 1 ];
    for(int i = 2; i <= n; i++){
        int nx = sir[ i ];
        if(nx < varf[ 1 ])
            varf[ 1 ] = nx;
        else{
            if(nx > varf[ lungime ]){
                varf[ ++lungime ] = nx;
            }
            else{
                varf[ cautare(0, lungime, nx) ] = nx;
            }
        }
    }
    return lungime;
}

int main()
{
    ifstream cin("scmax.in");
    ofstream cout("scmax.out");
    cin>> n;
    for(int i = 1; i <= n; i++)
        cin>> sir[ i ];
    cout<< solve();
    return 0;
}