求助杭电oj1087题不知错哪了？

[椰子是只猫]

import java.util.Scanner;

public class Main{
	private static long dp[] = new long[1000];
	public static void main(String[] args) {
		Scanner scanner = new Scanner(System.in);
		
		while (scanner.hasNextLine()) {
			int n = scanner.nextInt();
			if (n==0) {
				break;
			}
			
			long arr[] = new long[n];
			long res = 0;
			for (int i=0;i<n;i++) {
				arr[i] = scanner.nextInt();
			}
			
			for (int i=0;i<n;i++) {
				dp[i] = arr[i];
				for (int j=0;j<i;j++) {
					if (arr[i]>arr[j]) {
						dp[i] = Math.max(dp[i], dp[i]+arr[j]);
					}
				}
				if (res>dp[i]) {
					res = res;
				}else {
					res = dp[i];
				}
			}
			System.out.println(res);
		}
	}	
}

不知道错哪了？刚开始刷杭电的小白一个，求助一下，哪里错了