题解 | 多组_一维数组_T组形式

import java.util.Scanner;
import java.io.*;
import java.util.*;
// 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) throws IOException{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      int t = Integer.parseInt(br.readLine());
      for(int i = 0 ; i < t;i++)
      {
        int n = Integer.parseInt(br.readLine());
        StringTokenizer st = new StringTokenizer(br.readLine());
        long sum = 0;
        for(int j = 0 ;j < n ; j++)
        {
            sum += Long.parseLong(st.nextToken());
        }
        sb.append(sum).append("\n");
      }
      System.out.println(sb.toString());
    }
}