题解 | 多组_二维数组_T组形式
a = int(input())
for i in range(a):
c, d = map(int, input().split())
sum0 =0
for j in range(c):
e = sum(list(map(int, input().split())))
sum0 += e
print(sum0)
a = int(input())
for i in range(a):
c, d = map(int, input().split())
sum0 =0
for j in range(c):
e = sum(list(map(int, input().split())))
sum0 += e
print(sum0)
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