题解 | 多组_二维数组_T组形式
多组_二维数组_T组形式
https://www.nowcoder.com/practice/fe1e902e076b46dd82e7d42e12617893
import sys
t = int(sys.stdin.readline())
for _ in range(t):
n, m = map(int, sys.stdin.readline().split())
total = 0
for _ in range(n):
nums = list(map(int, sys.stdin.readline().split()))
row = nums[:m]
total += sum(row)
print(total)
