1965.java

import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());

        int arr[] = new int[n];
        int dp[] = new int[n];
        Arrays.fill(dp,1);
        StringTokenizer st = new StringTokenizer(br.readLine());
        for(int i = 0; i < n; i++){
            arr[i] = Integer.parseInt(st.nextToken());
        }

        int max = 1;
        for(int i = 1; i < n; i++){
            for(int j = 0; j < i; j++){
                if(arr[j] < arr[i])
                    dp[i] = Math.max(dp[i],dp[j]+1);
            }
            max = Math.max(dp[i],max);
        }

        System.out.println(max);
    }
}