2 test case fail out of 5 what is the problem in code

import java.util.*;
public class Main {
static String getSubSet(int[] a, int low, int high) {
if (low > high) {
return “No”;
}

	if (a[low] + a[high] == 0) {
		return "Yes";
	} else if (a[low] + a[high] > 0) {
		return getSubSet(a, low, high-1);
	} else {
		return getSubSet(a, low+1, high);
	}

}

public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	int T = sc.nextInt();
	while (T-- > 0) {
		int S = sc.nextInt();
		int[] a = new int[S];
		for (int i = 0; i < a.length; i++) {
			a[i] = sc.nextInt();
		}
		Arrays.sort(a);
		String res = getSubSet(a, 0, a.length - 1);
		System.out.println(res);
	}
}

}

@nigamshubham1998,
Input:
3
4
-1 -1 -1 3
4
100000 100000 100000 100000
4
10 9 -3 -6

Correct output:
Yes
No
Yes
Your output:
No
No
No

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