题解 | #拦截导弹#

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int[] array = new int[n];
        for (int i = 0; i < n; i++)
            array[i] = scanner.nextInt();
        int[] dp = new int[n];
        Arrays.fill(dp, 1);
        int maxLen = 1;
        for (int i = 1; i < n; i++) {
            for (int j = 0; j < i; j++) {
                if (array[j] >=array[i]) {
                    dp[i] = Math.max(dp[i], dp[j] + 1);
                }
                maxLen = Math.max(maxLen, dp[i]);
            }
        }
        System.out.println(maxLen);
    }
}