题解 | #多组_二维数组_T组形式#

import sys

input_data = sys.stdin.read()

lines = input_data.strip().split('\n')

group_num = int(lines[0])

t = 0

line_num = 1

while t < group_num:

    dim = list(map(int,lines[line_num].split()))

    row, column = dim[0],dim[1]

    res = 0

    for i in range(line_num+1, line_num+ row + 1):

        arr = list(map(int,lines[i].split()))

        for j in range(column):

            res += arr[j]
    
    print(res)

    line_num = line_num + row + 1

    t += 1