注意格式，案例輸出結果之間都要有一個空行

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub

		Scanner scanner = new Scanner(System.in);

		int N = scanner.nextInt();
		
		for (int i = 0; i < N; i++) {
				
			int sum = 0;
			int M = scanner.nextInt();
			for (int j = 1; j <= M; j++) {
				int a = scanner.nextInt();
				sum += a;
			}
		
			System.out.println(sum);
			if (i < N - 1) {
				System.out.println();
			}

		}
			
	}

}