滴滴编程第一题___求大佬指导哪里出了问题..

//60%多的通过率
import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		@SuppressWarnings("resource")
		Scanner scanner = new Scanner(System.in);
		int max = 0;
		while(scanner.hasNext()){
			String input = scanner.nextLine();
			String[] str = input.split(" ");
			int[] a = new int[str.length];
			for(int i = 0; i < str.length; i ++){
				String re = str[i];
				a[i] = Integer.parseInt(re);
			}
			int n = str.length;
			for(int i = 0; i < n; i ++){
				int sum = 0;
				int aj = 0;
				for(int j = i; j < n; j ++)
					if((j+1) < input.length()){
					aj = a[j];
					if((sum+aj) > max){
						max = sum+aj;
					}
					sum= sum + aj;
					aj = 0;
				}
			}
			System.out.println(max);
		}
	}
}