PIO7 题解 | 多组_一维数组_T组形式

import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int t = sc.nextInt();
        for (int i = 0; i < t; i++) {
            int n = sc.nextInt();
            long sum = 0;
            long [] arr = new long[n];
            for (int j = 0; j < n; j++) {
                arr[j] = sc.nextLong();
                sum += arr[j];
            }
            System.out.println(sum);
        }
        // 关闭scanner释放资源
        sc.close();
    }
}