题解 | #矩阵计算#
矩阵计算
http://www.nowcoder.com/practice/0c83231923c541d2aa15861571831ee5
N, m = map(int, input("").split(' '))
list_num=[]
sum=0
for i in range(N):
num = list(map(int, input().split(' ')))
list_num.extend(num)
for i in list_num:
if i>0:
sum+=i
print(sum)
查看3道真题和解析
