题解 | 多组_一维数组_T组形式

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();
        for(int i = 0;i< t;i++){
            int n = sc.nextInt();
            sc.nextLine();
            long sum = 0;
            for(int j = 0;j<n;j++){
                long num = sc.nextLong();
                sum = sum + num;
            }
            System.out.println(sum);
        }
        sc.close();
    }
}