题解 | #多组_二维数组_T组形式#

import sys
i = 0
nm_line = 1
def sum2dlist(n):
    return sum(map(sum,n))

for line in sys.stdin:
    a = line.split()
    if i == 0:
        total = int(a[0])
    elif i == nm_line:
        n,m = map(int,a)
        nm_line += (n+1)
        case_list = []
    elif i == nm_line-1:
        list_line = list(map(int,a))
        case_list.append(list_line)
        print(sum2dlist(case_list))
    else:
        list_line = list(map(int,a))
        case_list.append(list_line)
    i+=1