小蓝和小桥的挑战

题目

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		
		int t = sc.nextInt();
		sc.nextLine();
		
		while(t-- > 0) {
			int n = sc.nextInt();
			sc.nextLine();
			
			int[] a = new int[n];
			for(int i=0;i<n;i++)
				a[i] = sc.nextInt();
			
			int sum = 0;
			int res = 0;
			
			for(int i=0;i<n;i++) {
				if(a[i] == 0) {
					res++;
					a[i] = 1;
				}
				sum+=a[i];
			}
			
			if(sum == 0) {
				for(int i=0;i<n;i++) {
					if(a[i] != -1) {
						res++;
						break;
					}
				}
			}
			
			System.out.println(res);
		}
		sc.close();
	}
}