题解 | 单组_二维数组
单组_二维数组
https://www.nowcoder.com/practice/4df606b6c3764d9c969f8759c8a4807b
import sys
n,m=map(int,input().split())
ans = [[0] * m for _ in range(n)]
for i in range(n):
ans[i]=list(map(int,input().split()))
print(sum(sum(row) for row in ans))
这样才显得专业